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It is ok to link together multiple domains on the same ip?
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I have multiple domains (more than 50) in the same niche. All domains are on the same ip. It is ok to link them together, or to create a piramid link between them?
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Thank you all for the answers! I want to give you more details about the sites/domains. All of them have original content, but the majority are small sites, less than 10 pages and these ones to not provide such value to users. The sites are about wine, some sites offer information about all types of wine, other provide information about places to visit and buy, see, try wine, one is a portal and one or two are about wine cellars.
I know Goole knows that all domains are mine. I think reasonable and if a user comes to a site, why isn't ok to drive him on other site to find some other information? So you, as an user land on a page, and from that page i can drive you to my main site, which is an online shop that sells all types of wine.
If i let the links dofollow between sites/domains, it can be interpreted as a manipulative tactic for increasing the PR, but users will find other informations about that big subject - wine.
I know that Google disagree this tactic if your domains are not related and they are more than 2-3, maybe more, but ther information found on all sites is about the same thing, and they are so related.
I will wait more answers and points of view from you, guys!
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You might want to put in one of your URLs here http://spyonweb.com/ and see just how easy it is for anyone to spot the servers that are on the same IP or that use the same Google Analytics or Google Adsense code. If we can do it that easily, so can Google.
What is your content like on these? Do you have enough content to make each site unique and standalone? Or is it worth the thought of combining some of them like others have mentioned?
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It won't matter if the are on the same C block, IP, etc. if they are all registered to the same owner. Today Google even looks at ownership. The issue with doing as you suggest is that you will likely be found out and, even if not penalized, I would think your links won't be allowed to help you.
There are two possible ways to go where you could add value to each:
1. As suggested by David, combine some of the sites where possible. Be careful with this and slow if you go this direction. Make sure you 301 redirect from URL on site A to similar on site B. For any one site, do not combine more than one other over 4 to 6 weeks. I would not combine more than about three sites to one. If some of the sites are low value, just get rid of them.2. Where reciprocal links are not of value, you might be able to offer a link from Site G for a link to Site F, etc. Again, I would suggest being methodical and not over doing it.
Best of luck
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I would stay well away from doing the above in terms of SEO. If you were going to do anything with the 50 domains, you would have been in a much better situation if they were on separate c-class IPs with private registration.
Interlinking these sites or creating a link pyramid are likely to (at best) have little or no SEO effect. However, you could link together if the different sites provide different value propositions for the visitor.
It may be a good time to consolidate some of these sites, more than 50 quality sites would be fairly difficult and costly to maintain.
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It would not be a good idea to interlink them for SEO reasons as you mention "creating a link wheel/pyramid". I would ask these questions to myself: 1. Do all the sites have unique content ? 2. Do they have any duplicate/repurposed content at all between theme ? 3. Do uses on one website need to navigate to the other website, since it provides value to the user ? 4. Have you considered nofollow links ? This is a bigger strategy discussion that you have to do to figure out your next steps. If they don't provide too much of a value, how about you aggrgate the content on 1, maybe 2 or 3 combined sites instead of 50 and 301 the rest ? It's really difficult to answer further without knowing more in detail. I hope this atleast invokes some questions and a long term SEO strategy.
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