Hi. This was mentioned in the Delta forum, but since it is so easy I figured people in this thread may be interested as well, and may not see the post in time.

Visit: http://www.delta.com/travel/sp_offer...gate/index.jsp
to play a game that takes about 5 minutes, with really simple questions, and get 10,000 Delta Skymiles.

Sounds too good to be true, but apparently it is legit?

Cheers!