<i>anyone looking to build a co-founder dating site has to figure out what value they are adding</i><p>1. Better search (by location, keyword, whatever)<p>2. time-based, so that old entries from years past don't pollute the current directory<p>3. protect anonymity but preserving a way to get in touch<p>4. more details available so you can make a judgment call more easily<p>5. a way to look at projects or people, depending on what your approach is<p>That's a good start. I'd say #2 is critical, because the Google Docs list will become obsolete within weeks.<p><a href="http://fairsoftware.net/publicUsers" rel="nofollow">http://fairsoftware.net/publicUsers</a> is a list of people, and <a href="http://fairsoftware.net/publicProjects" rel="nofollow">http://fairsoftware.net/publicProjects</a> is a list of projects. You can navigate back and forth.