Dopplr.com is a cool travel social network (a lot like TripIt) that helps you find out if your trips are going to coincide with your friends.

Anyone who knows me even a little bit knows I don’t plan ahead very much. So this “travel coincidence” functionality is less useful for me, considering I book many of my trips 12-24 hours before departing. I usually don’t get around to posting my itineraries until after my trips.

What’s great about Dopplr is that they also export past trips with a pretty cool annual report (I don’t have it yet, I’ll get it in January). Check out my public Dopplr profile here. Highlight: “6.02 km/h is Brian’s Personal Velocity. Which is about the same as a duck.”

They don’t have this as an actual feature, but by exporting my itineraries as a JSON object, I was able to display my travel in an interesting format: Days spent (and percent of the year spent) in various cities.

In 2009:
Phoenix: 188 days (51.5%)
San Francisco: 98 days (26.8%)
New York: 28 days (7.6%)
Los Angeles: 14 days (3.8%)
Boulder: 10 days (2.7%)
Austin: 8 days (2.1%)
Las Vegas: 7 days (1.9%)
Chicago: 5 days (1.3%)
Springfield: 4 days (1%)
Philadelphia: 3 days (0.8%)