del.icio.us
blinklist
digg
Facebook
Furl
ma.gnolia
Newsvine
Pownce
reddit
StumbleUpon
Technorati
Twitter
Hundreds of people who appear to be commuters are in fact part of a choreographed routine. This kind of spontaneous production is most likely executed sans permits. Just as copyright laws are being tested and challenged so too are the proper channels producers have gone through in the past.