The "Like" button?

Does anyone know how the like button works? I don't understand it.

Thanks,
Blutex

as far as I know you just click on it if you like the post

Yes, if you like the post then you click on the Like button. Posts that have had their Like button clicked will show a count of how many times it was done.

Liking posts doesn't "earn" you anything and your name won't appear that you liked the post.

Yes, that is correct.

Oh - ok. Thanks.
Is there a way to search for popular posts?

I don't think there is but the closest is if you go to any forum

Ex.:
Main Discussion Forum

and click on rating