Perfect for planning holidays, Dopplr also allows users to share their travels with other users or just selected friends.
The idea behind Dopplr is that of folksonomy; the folks of the world create the information. So the people who have travelled to Melbourne add in information about where to eat, where to get a great coffee, where to stay, you get the idea. Valuable for pre-trip planning, Dopplr is only as strong as the members make it.
Once you have registered for Dopplr and entered details of an upcoming trip, Dopplr contacts you with tips on hotels, restaurants and other places of interest.