I just found a interesting sweepstakes, the link is as follows:
http://www.aurabuy.com/win-your-dream-flashlightsthere are four different LED flashlight to be draw out on March 8th, 15th, 22nd, and the final award is on April 2nd.
It says everyone has the same chance to win the final award, and if we invite more friends to join, we will get more lottery numbers to win.
The rules seem a little complicated, but it is quite funny.