Seti@Home
Participate by running a screen saver program that downloads and analyzes radio telescope data. A complicated piece of scientific analytical software that performs a large set of mathematical operations on the data that you are downloading from the Berkeley SETI program. http://setiathome.ssl.berkeley.edu/
WhatHelps?
Provides topical hosting services for your community homepage, community building tools (like chat, board and discussion lists) and member tools (like member websites, webmail and instant messaging). http://whathelps.com
