I think I posted an article about Banksy a while back, but I came across it again and was just amazed at the graffiti featured on the site.
There’s tons of really artistic graffiti here; stuff that actually has meaning both outdoors and indoors. It’s great scrolling through the pictures on the site and thinking about what the artist’s intention was behind the piece.
Update (2/26/15):
I was recently contacted by Nicholas from Artsy.net who let me know about a great resource page that Artsy has put together all about Banksy, which features Banksy’s bio, 70+ of his works, up-to-date exhibitions, current shows, in-depth articles, and related artists. Awesome!