At sickos.org, Andreas and I run a copy of the social bookmarking software Scuttle. Basically, it is an open source implementation of del.icio.us (or at least, as delicious was back in 2006). Scuttle development has slowed down, but we keep up running this service and patch bugs every now and then. If you want to join us, read the documentation here and feel free to add your bookmarks there.
