I'm sorry guys, this must sound dumb. I just really want to know what a "vote up" is and what a "flag" is and if they do anything, because in my experience, they don't.
I had a huge problem with that, when I first joined. I have a YouTube account, and that's all I really did. On YT, if you see a comment you like, you give it "thumbs up" and it says +1 by the comment. Thus, theres actually a few comments with like +13 or something, and even one I once saw with +673. So when I got to AG, I was voting up really dumb comments, like "Too easy" and stuff.