"SFZero is a Collaborative Production Game. Players build characters by completing tasks for their groups and increasing their Score. The goals of play include meeting new people, exploring the city, and participating in non-consumer leisure activities."

"CKAN is the Comprehensive Knowledge Archive Network, a registry of open knowledge packages and projects (and a few closed ones). CKAN is the place to search for open knowledge resources as well as register your own."

"it doesn’t sound particularly astounding on paper, but within a day it recommended to me a couple of albums i that was very excited about but had no idea they were forthcoming." Excellent stuff.

Most interesting - the OLPC has a dedicated view source key - not just for the web, but for everything...