SB Nation's partnership with the one-day fantasy league site FanDuel is entering its third season. If you think you are smarter than the masses, you can put your money where your mouth is and you might walk away with a little something for your trouble.
Disclosure: I and the other SB Nation MLB sites have been comped a small amount by FanDuel to play, and are being compensated through the season to promote the product.
How to play and the official rules, including which states in which players are legally prohibited from playing, can be found here.
If you're curious, FanDuel has provided this short video about how it all works:
New for this season is that new users can get a refund on your first game if you do not win money.