You can earn free SPG miles for answering trivia questions from Audience Rewards. Two miles each.
Here are the answers for July 2013.
Answers are: 1. Cinderella 2. December 1963 (Oh, What a Night) 3.Falling Slowly 4. The Cosby Show 5. 1992 6. Rainfall.
Source: http://thefreebieblogger.com/113710/12-free-best-buydeltaus-airwaysstarwood-reward-points/
