Thinking about karma, have I mentioned lately just HOW MUCH I miss the rate buttons when I'm on other forums?
Rating is much more satisfying and fast than having to go to the trouble of replying to a post, when I think something in it is really admirable, or very useful, or good quality...or really stupid or immoral, or misinformed.
It's one thing writing out a reply when I think I have something to add to information, or a conversation...but it's another thing posting when all I want to say is "I agree!" or "You are cool!" or "you suck!"