Broadsided Press publishes a new, printable PDF featuring an original poetry & visual art collaboration every month; they've beeing doing it since 2005. You can even become a vector for this distributed, "serendipitous" press.
The Birth of Sharing Law and the Rise of Co-ops - "A new sharing economy is emerging — but how does it fit within our legal system? Time for a whole new field of cooperation law." (via wc)
Like iScribble and Oekaki before it, DoInk.com is a place for people to create collaborative artwork online. The difference? It's for animation. [more inside]
A Million Penguins, the wiki novel mentioned previously on MeFi, is complete, and a research paper about it has been released. [more inside]
CASH is the Coalition of Artists & Stake Holders, a project conceived and initiated by musician Kristin Hersh. CASH is "read-write" — more than consumption; a collaborative online effort — helping make music ownership more of an interactive affair facilitated through Creative Commons licensing.
Mural Mosaics! Artists come together to create beautiful themed murals, made of hundreds of relevant paintings. [more inside]