On the subject of busking..... I saw a guy busking in Edinburgh during the festival...he was a pretty good violinist and he had no bucket or other receptacle for money...he had instead a small notice on a stand with a couple of CD covers pinned to it "If you like what you hear buy a CD"....there was a girl I assume his wife or partner selling the Cd's from a suitcase full of them....and a queue waiting to buy them. I spoke to him after buying a CD......seemingly a while back he had a large run of Cd's made which he could not sell and this was his way of getting rid of them. He had sold so many he had to order more Cd's.
I still have the Cd with his eclectic mix of pop, rock, jazz, country, blues and classical music adapted for the violin. His version of Voodoo Chile using an electric violin with fx and a wah wah pedal is amazing.

http://www.soundclick.com/bands/songInfo.cfm?bandID=687727&songID=5238055