Dopplr

Dopplr, originally uploaded by Mixmaster.

Dopplr is an online service for intelligent business travellers (and me).

Dopplr lets you share your future travel plans privately with friends and colleagues. The service then highlights coincidence, for example, telling you that three people you know will be in Paris when you will be there too. You can use Dopplr on your personal computer and mobile phone. It links with online calendars and social networks. Take the tour to find out more and sign up now .

The service has attracted a following among business travellers around the globe. Jimmy Wales of Wikipedia recently named Dopplr his "favorite non-wiki website" in The New York Times Sunday Magazine: "You put in your travel schedule and link to your friends. It allows you to see where everyone is. I love it."

In addition it automatically finds every Flickr photo you shot on your last trip and announces where you're going to your contacts on Facebook via the Facebook application.