I've been using the Bing Ad Intelligence tool (which is great!), but I'm confused about one of the metrics and even the Microsoft customer support guy wasn't too clear.

I search on "wills and trusts" and I get results that say there are 2,347 searches, and 7,228 impressions.   How can there be more (ad) impressions than there were searches?  If it was 5 searches and 1 impression, I'd assume that meant an ad didn't appear for all the searches.  Makes sense.  But 1 search and 2 impressions ... how does that happen?

Appreciate any help, probably a dumb question but has me puzzled.  Also, I hope non-Moz tool questions are appropriate.

Thanks!

Yes it is (clear), and I'll review the Analytics documentation for more details.  Really appreciate you taking the time to reply.    ~Mike

Thanks Dirk.  That answered the issue I was uncertain about, which was whether blocking visitors from Analytics reports truly prevents them from hitting the site (even an error page), and apparently it doesn't so your answer makes perfect sense.

One more question:  Does an Analytics filter automatically apply to all Analytics views/reports for that domain/site, or does a filter have to be assigned to the views I want it to affect (in this case, all of them)?

Thanks for the quick response!
Mike

I've got a similar problem with nearly 50% of the traffic to many of my client's sites coming from Brazil.  My clients are and will only ever be local, small town operations, so my questions are:

1.  Why it's not a good idea to block those visits that are irrelevant to the traffic we want to measure.
2.  Bounce rate is considered to play at least some role in the ranking algorithm, or at least I always thought so.  If over 50% of my traffic is bouncing because it's bot driven, spam related, etc, shouldn't I be worried about the adverse affect on my bounce rate?

Just trying to understand the rules to this game.  

Thanks!
Mike