There are many good graffiti sites on the web at present. Art Crimes presents the largest list of links available. We present this smaller list more as an introductory sample than a comprehensive index. As with graffiti written on walls or trains, many sites have a brief life-span. If some of these have gone off-line before we can delete them and add more, just go on to other sites.
Some sites contain large images that load relatively slowly, but they're worth the wait.
A fair number come from free sources such as Geocities. This site includes perhaps the most extensive and frequently updated links page on the web. And it's a good site in itself. International Work-Group on Graffiti Research Axel Theil's index of graffiti commentary. The most extensive I've found so far.