levo - 10:37 am on Feb 27, 2013 (gmt 0)
If you have followed Google's recommendation and implemented rel=next for your paginated links, or if you're using rel=prerender to speed things up; Chrome 25.x and 26.x (beta) has a serious bug.
Lets say someone searched for your page on Google and the first link is your website. Chrome prerenders it. (Note that you can't prevent prerendering, Chrome no longer sends any specific headers)
And if you have next/prerender link in header to another page, even if the visitor doesn't visit the page or visits other pages even from other websites, Chrome keeps prerendering the next page and the next page from your site.
As long as the user keeps the window open, Chrome keeps prerendering.
It starts to happen if the user doesn't visit the prerendered page and goes to another url. Once it starts, it prerenders the next page every 30 seconds. (I think it happens when Chrome tries to evict the preprendered page)
Google Analytics or other stats that have implemented Page Visibility API doesn't record it. But others, like Adsense, record the impressions.