I have had a GREAT time on DealFun. I have won an a few small items (Angry birds sling shot, car mp3 player, ipod travel charger kit) and a beautiful Samsung 32" LCD TV. I got all of these items for a total of $11. (I won the TV for $9.71) and I used no more then 100 bids for all these items.
I saved a ton of money and for those that state it's a scam it's because they don't understand it's unique type of auction style.
The other great thing about dealfun is their dealwheel, where you can get a chance to win an item instantly or get a few free bids (that last only 24Hrs).
Who knows maybe you might win something with some free bids.