If I was a digital agency/consultancy, I'd snap this up. I think it would be fairly easy to fork and customize for big brands that want to do Facebook promotions, reviews, focus groups, etc.
"Tell us your 3 favorite items at Applebee's ..."
"Thanks for trying the new filet mignon chalupa at Taco Bell. Describe it in 3 words ... "
"What 3 things are most important when choosing your next car? ..."
(I'm sure someone more creative could do better, but you get the idea)
I also did a test for using sentiment analysis as a monetization point, using the Amazon Kindle (question was, "What do you think of the Amazon Kindle?") which was displayed on top of the dashboard for all users, and it got something like 7,000 responses. The responses weren't amazing, but it is possible to improve them. There was zero targeting on whether or not the "sponsored listing" was displayed, whereas Smashing Mag's results are clean since the only people submitting words are people that know what Smashing Magazine is.
I only see spams from most of the msg. I think you are doing a right thing trying to capitalize while the hype is there. Based on alexa, it is dying out already.
"Tell us your 3 favorite items at Applebee's ..."
"Thanks for trying the new filet mignon chalupa at Taco Bell. Describe it in 3 words ... "
"What 3 things are most important when choosing your next car? ..."
(I'm sure someone more creative could do better, but you get the idea)