Just to expand on that, I'm cool with being able to 'like' a post to show appreciation, but I don't really see the need to display the number of 'likes' someone has received. A new poster that disagrees with a poster with loads of 'likes' may be reluctant to speak up for fear of being flamed.
Also, I don't like the idea that a poster who occasionally posts a well thought out, interesting post that opens up a great discussion, will probably end up with less 'likes' than one who posts several soft porn gifs a day. Just my tuppence.
Lastly, seriously? Do you really fucking care?