Color and geometry/composition are okay, not the greatest, but not completely terrible either. I have no issue with taking photos of homeless people, and I'm not sure how much we should be worried about "taste" in art anymore anyway :razz:
I have also taken a few photos of people who were probably homeless (can't always tell ya know), although my photography is considerably less candid than this. I usually go right up to a person and get my camera pointed right at their soul, which usually requires permission. Often times they ask for a dollar or a cigarette (which is of course exactly what the homeless need) and I don't mind paying people small amounts for a street portrait. But to each his own style of course.
I feel like going out of the normal standards of art, but especially people photography (senior portraits, weddings, crap like that), theres always a chance of turning out less than tasteful work by some standards (which might actually be the artistic intention, artists are strange people aren't we?), but like anything that you want to make your own, you have to work to develop it and with that will come taste (or distaste, I suppose). My 1¢