Open Source Museum of Open Source Art

You don't normally expect museums to be open source, not least because they are rather keen on preventing visitors from modifying their exhibits. Of course, if the museum and its holdings are purely virtual, then this is less of a problem - you could always undo operations, provided you keep a backup.

And thus was born OSMOSA, the Open Source Museum of Open Source Art, in Second Life; the name comes from the fact the museum can be modified, too. Truth to tell, the idea is rather more interesting than the (virtual) reality, which was rather confused when I visited.