Panic at the Disco was streaming their new album for free on facebook, the catch was that I had to click "Like" on their facebook page to listen to the whole thing.  I wouldn't click on it because I didn't know if the new album is good or not, so I left the page without listening to any more.  I don't think they understand how facebook really works:  If I say I like something, I'm putting my credibility on the line.   My friends trust that I won't sell out my opinion or sell their information for a reward/bribe from some company.