Forum Moderators: mack
Thanks!
I suspect that some of the 'cheating' is actually done with the approval of the toplists owner - maybe in return for a link or because they own the site as well.
I actually end up with legit links from a toplist on a PR6 index page because of the traffic I send them - but I've never noticed any particular boost to my sites rankings because of it.
However Iframes allow you to open up another website in a 1x1 pixel on your website. So here's how they cheat you:
On their site (or some busy site) they put a 1x1 IFrame with the url source set the to topsite url that gets them a vote. So every time their page is loaded it looks like they sent a hit to your topsite but the surfer could never view your site because it was in a 1x1 frame.