MotionX-GPS and Twitter, a perfect combination. MotionX-GPS users all over the world are tweeting their tracks and waypoints to quickly share their activities. For example:
@wanoola is using twitpic to post images of his tracks – Map of Hamburg Run
@GeorgGGG from the Czech Republic – George’s Blog

Here’s a map of Europe with a few of the other tweets posted from MotionX-GPS.

A few of the MotionX-GPS users tweeting in North America