If you were to log in, you'd be able to get more information on your fellow community member.
It's a great idea, and I know users would love it. But I have two issues with it. 1.) It takes away the revenue stream from content creators, who are depending on eyeballs of viewers to see their ads, not yours. There could be copyright issues, but regardless, it disincentives the content creators or aggregators. 2.) If it works for me, it will work for a spammer. And then it won't work at all. People will demand forums where this isn't allowed to reduce the amount of spam (and drunken tweets that are familiar)