Dopplr is a social network for travelers. Plug in your travel schedule and a list of people you'd be happy to meet. Get back info on who will overlap with you, when and where.
I joined last month, but the pool of people using the service was small (my internal ID is 993) and their overlap with people I know or want to meet was smaller (less than a dozen at that time). So I listed my known travel schedule and thought no more of it. Indeed, no meetings have come about as a result. My one impromptu meeting (with Darren McKellin of Visto) on last week's Asia trip, resulted from my blog post not a connection via Dopplr.
But now I notice I have "unlimited" Dopplr invitations available. So while it's still in private beta, it appears I can invite all of my readers! If you are crazy enough to follow this RSS feed or otherwise read any of what I write, then I'm vain enough to correspond, and possibly, meet.
Either way, if you are interested in joining the Dopplr private beta, send me an email (rbt at nmss.com) with your name and email address as you want them to appear within Dopplr.
But if you suffer from Social Network Fatigue, I'll also continue posting travel info in my blog. I'm happy to meet interesting people, as time allows. And anyone who reads my writings must be interesting, right? :-)