All of the contests listed on this page will let you register to win once per day. Ongoing Get a 1000 score in their online trivia game to qualify to win prizes. Appears to be open only to UK residents.
All games are free to play.
For US residents age 18 or older. Also, be sure to enter their free t-shirt drawing and Guess The Price contest. Open to US residents age 18 or older. Open to U.S. and Canadian residents age 18 or older. Open to US residents age 18 or older.