an online web service that allows users to visualize & share snippets of all sorts of data in form of simple statistical graphs. the Mycrocosm project focuses on social communication & the creation of individual & biographical data profiles (e.g. Feltron's annual report), rather than possible uses of data tracking (e.g. Track-n-Graph) or social visualization (e.g. Many Eyes).
the project seems to come very close to Feltron's Daytum (seemingly still in private beta).