Moz Q&A is closed.
After more than 13 years, and tens of thousands of questions, Moz Q&A closed on 12th December 2024. Whilst we’re not completely removing the content - many posts will still be possible to view - we have locked both new posts and new replies. More details here.
Why are bit.ly links being indexed and ranked by Google?
-
I did a quick search for "site:bit.ly" and it returns more than 10 million results.
Given that bit.ly links are 301 redirects, why are they being indexed in Google and ranked according to their destination?
I'm working on a similar project to bit.ly and I want to make sure I don't run into the same problem.
-
Given that Chrome and most header checkers (even older ones) are processing the 301s, I don't think a minor header difference would throw off Google's crawlers. They have to handle a lot.
I suspect it's more likely that either:
(a) There was a technical problem the last time they crawled (which would be impossible to see now, if it had been fixed).
(b) Some other signal is overwhelming or negating the 301 - such as massive direct links, canonicals, social, etc. That can be hard to measure.
I don't think it's worth getting hung up on the particulars of Bit.ly's index. I suspect many of these issues are unique to them. I also expect problems will expand with scale. What works for hundreds of pages may not work for millions, and Google isn't always great at massive-scale redirects.
-
Here's something more interesting.
Bitly vs tiny.cc
I used http://web-sniffer.net/ to grab the headers of both and with bitly links, I see an HTTP Response Header of 301, followed by "Content", but with tiny.cc links I only see the header redirect.
Two links I'm testing:
Bitly response:
Content (0.11 <acronym title="KibiByte = 1024 Byte">KiB</acronym>)
<title></span>bit.ly<span class="tag"></title> <a< span="">href="https://twitter.com/KPLU">moved here</a<>
-
I was getting 301->403 on SEO Book's header checker (http://tools.seobook.com/server-header-checker/), but I'm not seeing it on some other tools. Not worth getting hung up on, since it's 1 in 70M.
-
I wonder why you're seeing a 403, I still see a 200.
http://www.wlns.com/story/24958963/police-id-adrian-woman-killed-in-us-127-crash
200: HTTP/1.1 200 OK
- Server IP Address: 192.80.13.72
- ntCoent-Length: 60250
- Content-Type: text/html; charset=utf-8
- Server: Microsoft-IIS/6.0
- WN: IIS27
- P3P: CP="CAO ADMa DEVa TAIa CONi OUR OTRi IND PHY ONL UNI COM NAV INT DEM PRE"
- X-Powered-By: ASP.NET
- X-AspNet-Version: 4.0.30319
- wn_vars: CACHE_DB
- Content-Encoding: gzip
- Content-Length: 13213
- Cache-Control: private, max-age=264
- Expires: Wed, 19 Mar 2014 21:38:36 GMT
- Date: Wed, 19 Mar 2014 21:34:12 GMT
- Connection: keep-alive
- Vary: Accept-Encoding
-
I show the second one (bit.ly/O6QkSI) redirecting to a 403.
Unfortunately, these are only anecdotes, and there's almost no way we could analyze the pattern across 70M indexed pages without a massive audit (and Bitly's cooperation). I don't see anything inherently wrong with their setup, and if you noticed that big of a jump (10M - 70M), it's definitely possible that something temporarily went wrong. In that case, it could take months for Google to clear out the index.
-
I looked at all 3 redirects and they all showed a single 301 redirect to a 200 destination for me. Do you recall which one was a 403?
Looking at my original comment in the question, last month bit.ly had 10M results and now I'm seeing 70M results, which means there was a [relatively] huge increase with indexed shortlinks.
I also see 1000+ results for "mz.cm" which doesn't seem much strange, since mz.cm is just a CNAME to the bitly platform.
I found another URL shortner which has activity, http://scr.im/ and I only saw the correct pages being indexed by Google, not the short links. I wonder if the indexing is particular to bitly and/or the IP subnet behind bitly links.
I looked at another one, bit.do, and their shortlinks are being indexed. Back to square 1.
-
One of those 301s to a 403, which is probably thwarting Google, but the other two seem like standard pages. Honestly, it's tough to do anything but speculate. It may be that so many people are linking to or sharing the short version that Google is choosing to ignore the redirect for ranking purposes (they don't honor signals as often as we like to think). It could simply be that some of them are fairly freshly created and haven't been processed correctly yet. It could be that these URLs got indexed when the target page was having problems (bad headers, down-time, etc.), and Google hasn't recrawled and refreshed those URLs.
I noticed that a lot of our "mz.cm" URLs (Moz's Bitly-powered short domain) seem to be indexed. In our case, it looks like we're chaining two 301s (because we made the domain move last year). It may be that something as small as that chain could throw off the crawlers, especially for links that aren't recrawled very often. I suspect that shortener URLs often get a big burst of activity and crawls early on (since that's the nature of social sharing) but then don't get refreshed very often.
Ultimately, on the scale of Bit.ly, a lot can happen. It may be that 70M URLs is barely a drop in the bucket for Bit.ly as well.
-
I spot checked a few and I noticed some are only single 301 redirects.
And looking at the results for site:bit.ly, some even have breadcrumbs ironically enough.
Here are a few examples
<cite class="_md">bit.ly/M5onJO</cite>
None of these should be indexed, but for some reason they are.
Presently I see 70M pages indexed for "bit.ly"
I see almost 600,000 results for "bitly.com"
-
It looks like bit.ly is chaining two 301s: the first one goes to feedproxy.google.com (FeedProxy is like AdSense for feeds, I think), and then the second 301 goes to the destination site. I suspect this intermediary may be part of the problem.
- topic:timeago_earlier,25 days
-
I wasn't sure on this one, but found this on readwrite.com.
"Bit.ly serves up links to Calais and gets back a list of the keywords and concepts that the linked-to pages are actually about. Think of it as machine-performed auto tagging with subject keywords. This structured data is much more interesting than the mere presence of search terms in a full text search."
Perhaps this structured data is submitted to Google?? Any other ideas?
Got a burning SEO question?
Subscribe to Moz Pro to gain full access to Q&A, answer questions, and ask your own.
Browse Questions
Explore more categories
-
Moz Tools
Chat with the community about the Moz tools.
-
SEO Tactics
Discuss the SEO process with fellow marketers
-
Community
Discuss industry events, jobs, and news!
-
Digital Marketing
Chat about tactics outside of SEO
-
Research & Trends
Dive into research and trends in the search industry.
-
Support
Connect on product support and feature requests.
Related Questions
-
Google not Indexing images on CDN.
My URL is: http://bit.ly/1H2TArH We have set up a CDN on our own domain: http://bit.ly/292GkZC We have an image sitemap: http://bit.ly/29ca5s3 The image sitemap uses the CDN URLs. We verified the CDN subdomain in GWT. The robots.txt does not restrict any of the photos: http://bit.ly/29eNSXv. We used to have a disallow to /thumb/ which had a 301 redirect to our CDN but we removed both the disallow in the robots.txt as well as the 301. Yet, GWT still reports none of our images on the CDN are indexed.
Intermediate & Advanced SEO | Jul 8, 2016, 10:35 AM | alphonsehaThe above screenshot is from the GWT of our main domain.The GWT from the CDN subdomain just shows 0. We did not submit a sitemap to the verified subdomain property because we already have a sitemap submitted to the property on the main domain name. While making a search of images indexed from our CDN, nothing comes up: http://bit.ly/293ZbC1While checking the GWT of the CDN subdomain, I have been getting crawling errors, mainly 500 level errors. Not that many in comparison to the number of images and traffic that we get on our website. Google is crawling, but it seems like it just doesn't index the pictures!?
Can anyone help? I have followed all the information that I was able to find on the web but yet, our images on the CDN still can't seem to get indexed.
0 -
How can I make a list of all URLs indexed by Google?
I started working for this eCommerce site 2 months ago, and my SEO site audit revealed a massive spider trap. The site should have been 3500-ish pages, but Google has over 30K pages in its index. I'm trying to find a effective way of making a list of all URLs indexed by Google. Anyone? (I basically want to build a sitemap with all the indexed spider trap URLs, then set up 301 on those, then ping Google with the "defective" sitemap so they can see what the site really looks like and remove those URLs, shrinking the site back to around 3500 pages)
Intermediate & Advanced SEO | Nov 24, 2016, 8:45 AM | Bryggselv.no0 -
Google indexing pages from chrome history ?
We have pages that are not linked from site yet they are indexed in Google. It could be possible if Google got these pages from browser. Does Google takes data from chrome?
Intermediate & Advanced SEO | Jun 19, 2015, 2:37 PM | vivekrathore0 -
Our login pages are being indexed by Google - How do you remove them?
Each of our login pages show up under different subdomains of our website. Currently these are accessible by Google which is a huge competitive advantage for our competitors looking for our client list. We've done a few things to try to rectify the problem: - No index/archive to each login page Robot.txt to all subdomains to block search engines gone into webmaster tools and added the subdomain of one of our bigger clients then requested to remove it from Google (This would be great to do for every subdomain but we have a LOT of clients and it would require tons of backend work to make this happen.) Other than the last option, is there something we can do that will remove subdomains from being viewed from search engines? We know the robots.txt are working since the message on search results say: "A description for this result is not available because of this site's robots.txt – learn more." But we'd like the whole link to disappear.. Any suggestions?
Intermediate & Advanced SEO | Apr 23, 2013, 9:51 AM | desmond.liang1 -
How to get content to index faster in Google.....pubsubhubbub?
I'm curious to know what tools others are using to get their content to index faster (other than html sitmap and pingomatic, twitter, etc) Would installing the wordpress pubsubhubbub plugin help even though it uses pingomatic? http://wordpress.org/extend/plugins/pubsubhubbub/
Intermediate & Advanced SEO | Jan 8, 2013, 4:43 PM | webestate0 -
"Jump to" Links in Google, how do you get them?
I have just seen yoast.com results in Google and noticed that nearly all the indexed pages show a "Jump to" link So instead of showing the full URL under the title tag, it shows these type of links yoast.com › SEO
Intermediate & Advanced SEO | Dec 13, 2012, 7:48 AM | JohnPeters
yoast.com › Social Media
yoast.com › Analytics With the SEO, Social Media and Analytics all being clickable. How has he achieved this? And is it something to try and incorporate in my sites?0 -
Site Indexed by Google but not Bing or Yahoo
Hi, I have a site that is indexed (and ranking very well) in Google, but when I do a "site:www.domain.com" search in Bing and Yahoo it is not showing up. The team that purchased the domain a while back has no idea if it was indexed by Bing or Yahoo at the time of purchase. Just wondering if there is anything that might be preventing it from being indexed? Also, Im going to submit an index request, are there any other things I can do to get it picked up?
Intermediate & Advanced SEO | Nov 12, 2012, 6:09 PM | dbfrench0 -
Best way to de-index content from Google and not Bing?
We have a large quantity of URLs that we would like to de-index from Google (we are affected b Panda), but not Bing. What is the best way to go about doing this?
Intermediate & Advanced SEO | Nov 8, 2011, 5:07 AM | nicole.healthline0