This question gets asked time and time again, but it's always helpful to enlighten our newcomers and refresh our seasoned folks. Over at High Rankings Forum, someone asks if you can increase your rankings by clicking like mad on the search result.
The answer, quite simply, is no.
Do you really think Google would make it that easy to get rankings?
Utilizing this method would make the system too easy to be gamed and spam sites can use their spamtastic bots to click on the links just to artificially inflate their rankings. It doesn't happen.
However, that's not to say that Google doesn't use click data at all. It just isn't clear how they use it, if at all, to impact the rankings. Only Google knows.
there are reasons to believe that usage stats are taken into consideration and probably will be moreso over time.
Forum discussion continues at High Rankings Forum.