Has anyone ever bid and taken a trip through sky auction? It's a site where you bid on vacations, air, hotels, etc.

Sky Auction FT thread
Here's a discussion at Flyer Talk's Travel Bidding Forum

I did a long time ago got a flight to Brazil for 300 dollars. It was not bad. I was able to change the flight return in Brazil. I also won a hotel stay, just check the service charges, that is where they get you. And the times of the flights can be really early or weird times...