Anything good written about this site is probably a lie because Happy Bidday pays people to write positive reviews.
They bombard people with "free" bids, which can be used on auctions to use "real" bids. There will usually be only one or two valuable items to bids on with the real bids. Therefore it is saturated. I had 1700 real bids and did not win a thing. (Oh, and their gift cards are usually for $10 plus bids.) They always claim the their items are at least $50 more than they are worth. When a "real" bid is placed, the price does not go up by a penny, it goes up as far as 40 cents. This makes a bid win very expensive -which is how they make their money. If you don't pay in two days for a win, they cover the screen with threats of losing your bids and/ or legal action! You cannot even play bids you have paid for. You feel stuck once your get involved, because you have thousand of useless bids!
I find it annoying when people say, "You're just mad because you don't have the right strategy." I have won a 50" plasma TV and a computer- for $1000 each plus much more. I can't believe I was fooled out of $500. So believe me when I say -don't fall for their tricks, you will lose your money, which is a horrible feeling.