It's rather difficult to find developer interest for new open source projects. Sourceforge, etc, have no real means of high-volume social networking. Besides, I'd really like to find someone from HN that is interested in my area of research (distributed web tech).

I understand if you're going to keep this spreadsheet specifically for the purposes of startup networking, but I politely request that you consider allowing open source projects as well. I don't think it would overcrowd your data.