Okay, so I was at the BMX track yesterday which is close to a economically-challenged community. While watching practice I saw a group of 12-14 year olds walk by with an nice older road frame which had been converted to a single speed. It was quite obvious these kids had no business having this bike, although it's possible they acquired it by legal means. Anyway, they saw me staring and got upset so I turned away. Later, I walked by the same boys on my way back from get some water and one of them said something again about me staring. So, I turned around and walked over to the boy and said, "What's the big deal? I like bikes and I was just looking at your bike." To which he responds, "So, you want to buy it for $50?" To make a long story short, I bought the bike from them for $40 with the intention of posting the bike as found on Craigslist so that the owner may recover it. If I can't find the owner, eventually, I'll sell it.
I was kind of torn on whether I did the right thing but I figured if I could get the bike back to the owner, it was worth taking the chance. (This is all on the assumption that the bike was actually stolen.)