Kevin Burton, a founder of Rojo recently set sail for new shores. His new venture is TailRank which is in that terminally annoying invite-only phase (thanks for reminding me to forget about your product until later), but still seems interesting. Looks like TailRank will be a weblog and webfeed search engine that will try to use social information to present results further from the popular peaks.
Not to pick on Kevin, but if Web 2.0 crashes and burns spectacularly, I'm sure invite-only betas will be a highly mocked archetype of the era.
No smilies for the humour impaired.