I intend this to provoke discussion and serve as a data point, and I'm actually going to post the question in other places as well, although it might be modified by what's said here.
The scenario.
Imagine that you are working as a busker playing music for the public for several years, and are making a decent if not superb living at it. You enjoy doing it, and you are making ends meet.
About a month ago, though, another busker has started working on a corner not far from you, and he's absolutely terrible. He's so bad, that you've actually noticed a small drop in your own donations by association. You've tried to talk to him a few times, but to be honest, he's a bit of an unpleasant fellow, mostly in mannerism and odor. A bit conceited - he believes that the fact that he's never done drugs makes him better than other street performers, no matter their talent level, but not hostile and he still wished you the best in his own awkward way, although he refused to move to a less well-trafficked spot when you asked. You suspect he is homeless, on account of some of the things he's said and the fact that he barely makes any money with his playing. Mostly, he is just incredibly incompetent. He's not good at playing his instrument, he's not good at talking to people since he rambles and quickly loses the point, and the fact that he thinks this is the way to move forward with his life means his judgement isn't all that great either. At the very least his incompetence at the lifestyle makes your own achievements more clear, and you've got a few compliments for being a welcome change from having to listen to "that guy".
Today, however, a passing philanthropist has been so moved by his terrible wretchedness that she decided to take mercy on him, granting him a free apartment to live in and a monthly stipend so he doesn't have to draw glares on the street anymore. This would be a good thing for you - business would probably go back to the level it was before he showed up. However, the philanthropist is direly opposed to giving money to those who would use it on drugs, and before she makes him the offer, she has decided to ask you if you know anything about his proclivities on that front.
How do you feel and what do you do? (See poll)