If you look at folks like @
Brogan's, @
Shelley's, @
Chris Deeming, @
Slavik, @
Adam Howard and others to numerous to mention, you notice that their like to post ratio is high... usually that is because they are posting items with pertinent content that is beneficial to the community as a whole.
I've got a thread that was started on one of my forums as a game... it's called "I want to be last". All it usually consists of is a user posting the word "last". I'm about to remove the post counting feature in that area since it allows the users to seriously inflate their post counts. They'll scream about it, but it's a fluff area.