In the simplest words; Karma is there to encourage people to create good quality enjoyable posts. That is it's only real purpose.
For example; It is to discourage someone from replying to a billion threads with "ok" and "me too". But instead to reply with at least a few sentences that makes it worth someones while to click on a link and read the post.
There are many things i *could* have done with Kara.. such as requiring people to state a reason. But after talking to my hubby when we initially set this board up we concluded that that would only result in hurt feelings or heavily competitive feelings. That isn't what we wanted to do here. Since the topic is love of tamagotchi and other virtual pets we wanted to keep that the topic instead of "how can I make my kara score higher".
So we went simplistic.. the number does nothing, it is a very simple plus and minus system. It is only to try and encourage good quality post content. I don't use it to judge a person or how I treat them if they write to me or if there are problems, etc.
When someone clicks the words there is no verification so there are chances people may accidentally click it or click the wrong one.
You should also keep in mind that lately the boards have been very slow, hardly anyone here. I don't believe there's been much karma given out in either direction too much when things are this slow.
I wouldn't focus too much on that little number. You've been posting here for a while and your posts are always good.