Former founder: http://diffle.com, http://bootstrapacitor.com, http://randomicity.net, http://whatshallidonow.net, and GameClay (which never launched). All dead now, my cofounder was the one that paid for the hosting, and he let them lapse when we gave up. I was the technical end of the partnership, writing the software.
Heh, it looks far more impressive when I just list URLs. Most of those "startups" were pretty lame side projects, and the one that wasn't was the one that never launched.