We want your feedback on some ideas for upcoming contests

Now that America's Best Dance Crew 5 is over, so are our regular contests. We've gotten some reader ideas for new contests, and wanted to get your feedback on these. Do you like the idea? Would you enter? Suggestions for improvement? Other ideas? 

The three contest ideas: 

• ABDC Blow-up - Once or twice a week, we would post a picture showing a portion of an earlier ABDC photo. There would be some means to identify the crew or person, but it would not be obvious. Readers would email their answers and the person with the most right answers wins
• ABDC Trivia - Once or twice a week, we would post a trivia question about the show. The answer would be findable somewhere on the internet (e.g., in video, picture, or interview) but not too obvious.  Readers would email their answers and the person with the most right answer wins
• BABDC Dance-off - Readers would email videos of their own group's performances. We would post them on the site and then have a poll allowing readers to vote for their favorites. The video with the highest vote count wins.