Updated
Dopplr, a site that lets you share your jet-setting travel plans with your jet-setting friends, has raised a second round of undisclosed size from a plethora of jet-setters from the world of tech.
The site, which we first covered in September, clearly caters to business travelers and the elite. Its investors, including Esther Dyson, Del.ico.us founder Joshua Schacter, Thomson Reuters CEO Tom Glocer and a host of other people with a lot more frequent flier miles than me, all supposedly use the the service to find out where in the world their friends will be at any given time.
When you tell Dopplr you'll be in Paris on July 14, for example, the site will show you a list of your fellow world travelers planning to be in town at the same time, making it possible for all of you to coordinate the re-storming of the Bastille. You can also subscribe to your friends' travel plans and link everything to your calendar of choice.
It would seem Dopplr is in serious competition with TripIt, which automatically pulls your itenerary from travel confirmation emails, and location-aware products like Brightkite and Loopt. But the latter two work in real time and are therefore more appropriate for spontaneous gatherings. Because of its focus on jet-setters, Dopplr is, in some ways, building a social graph akin to that of ASmallWorld, the super-selective social network for the extremely well-connected, but without the air of exclusivity. Locking in enough of these types creates some interesting opportunities for advertising, but it's hard to envision anyone spending a lot of time on the site in its current form. I'm guessing it has bigger plans up its french cuffs.
(Update: The original post said Dopplr could not pull your itinerary from emails. In fact, it can.)