The dotMath project now has a space on SourceForge at https://sourceforge.net/projects/dotmath/
I applied for the space and now it is apparently ready to roll. I have just placed a posting on the message board to get things started. Next step is to finalize which license to use and put the code and assembly out there.
My ideal situation is to use SourceForge for distribution and my own site for project control and communication - following the model the guys at icsharpcode.net use. My thinking is to get a .Text hosted blog and register a URL to point at it. I think this simplifies the code distribution and error reporting and makes for a nice communication and simpler tool use. Finding a site to do that is priority #2 right now.