I like the idea of the like buttons, but I noticed they have a dislike button too. Which can be a good idea, but I feel that these could be used in a wrong way to discourage posters. No one wants to see that their ideas are being voted down by everyone. Maybe its also only me, but I cant force myself to do it. I might dislike the post, but I know I would feel guilty if I disliked it.

Maybe consider keeping just a like button?
I know programming these features and upkeep of the site are time consuming and I really appreciate it. I do enjoy this site.