Good ideas. Some brands and celebrities have a threewords.me with cool results, like Smashing Magazine: http://threewords.me/smashingmag

Also celebrities (thanks to @Mazy) like Young Money's Lil Twist - http://threewords.me/liltwist

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.