I think that thanks should be given too useful posts that help them, or stuff like getting useful information or making good posts and stuff. Then the reputation system should just to like rep your friends and stuff, cause I think it's a better system to have the liking and stuff seperate from the useful post thingie, cause people will get thanks for no reasons and stuff just because of their bodies and that shouldn't add to the reputation and stuff, it's more of a thanks thing then a your my friend thing I think.