I'm fine with the reputation system. I wouldn't say I like it, but it is a good way to recognize someone as a good poster. Hopefully the giving of reputation through good comments, as well as the taking away of through bad comments, is deserved. It is hard to tell. I too only give good comments, as I find there is little sense in taking giving them a bad reputation for a post I have some minor problem with. And I have never come across a post that I had a major problem with. Plus, I don't think my giving of a good comment even gives much reputation at all... I guess it does give some posters more motivation to think through posts, check spelling, etc. And it rewards many posters who deserve to be.
Concerning signing you comments: I thought I remembered something you could set to make your comments signed or not, but now I think I was dreaming.

Do you need to literally sign your comments, or am I not losing my mind? (I seriously doubt the latter).
Thanks.
-Durelin