redhat.com | Open Source World Map
http://www.redhat.com/about/where-is-open-source/activity/

A nice idea for the map section

A simple to use self hosted lifestream platform written in asp.net and jQuery. Pull in your data from all over the internet and display it all in one place

Open source lifestream platform, article: http://www.readwriteweb.com/archives/amplifeeder_friendfeeds_much_prettier_sister.php

Track and plan your active life! From rock climbing, running, cycling, hiking, and camping to yoga and gym fitness.

how to handle media files in activity feed streams

People from Google, MySpace, Facebook, Yahoo!, Nokia, Comcast" and startups met on January 8, 2009, to "discuss proposed standards for the future of 'activity streams'." Marshall Kirkpatrick analogizes standards to the railroads' standardization on gauge track.