how to get star?

You get a star by reaching 100 posts and I think depending on how you are rated denotes the number inside of it. I asked this question when I started, as I really wanted one, its one of those things that you want to get hold of :-)

Either start or respond to 100 posts. Your rating is how the members rate you. The more pluses you get, the higher your reputation gets by the mylotters. It is not myLot's rating of you, but the users. If you get negatives, the rating goes down. That is why there are so many more safe no offensive discussions because we do not want to go down.