Dat — an open source project that provides a streaming interface between every file format and data storage backend. See the Wired piece on it.
Smithsonian Crowdsourcing Transcription (Smithsonian) — 49 volunteers transcribed 200 pages of correspondence between the Monuments Men in a week. Soon it’ll be mathematics test questions: “if 49 people transcribe 200 pages in 7 days, how many weeks will it take …”
MIT Guide to Family CompSci Sessions — This guide is for educators, community center staff, and volunteers interested in engaging their young people and their families to become designers and inventors in their community.