The Wikipedia entry includes legal considerations, case law, and anecdotes including Paul McCartney...
Answer.com entry has a long list of reference links...

BUSKER LINKS

Here's Jesse Gersenson's site, with some quirky dos and don'ts of busking, and travelling about on the cheap.Stiff Arming Society both in the United States, and Europe. Here's what vocalist.org.uk has to offer. The list at WorldWideDirectory.com even has a link back to THIS page!

NOW! Purchase IN THE LIGHT album,
OR, individual single mp3 downloads


busker4freedom
at iTUNES