What's that guy at the coffee shop typing into his computer? These days you may actually be able to find out. If he's using Twitter or FourSquare, nearby messages can be called up using the APIs. The new Geosay mashup does exactly this, showing tweets and tips near your location--or any location you request.
Have you noticed the many tools to share your location? There's FourSquare and Gowalla, both about a year old. Then there are old-timers like Brightkite. And now, there's one that works with all three (and a couple more).
We have mashups to help us figure out where we want to go, the best way to get there, and then what's the coolest stuff to do when we get there. One thing that's often overlooked is how much it'll cost us to get from point A to point B.