do a search, loads of other links here in the pvan, heres a few:
http://www.deltainc.nl
http://www.artcrimes.org
http://www.graffiti.org
http://www.at149st.com
http://www.daim.org/
http://www.whitedust.demon.co.uk…
http://www.defumo.org
http://stencilrevolution.com/
http://obeygiant.com/