Tips for earning on Swagbucks?

Tweet

I was wondering how people get a lot of swagbucks. It seems very random, sometimes I get one when I search, but I don't get one for every search. Do you only get one per day, no matter how many searches you do, or is it possible to win more than once per day? Does anyone have any tips or tricks to earn more? I don't think I am going to like the site very much, as you don't get rewarded for every search.