[arebop]

I've been using http://www.boatingsf.com/ais_map.php and I like this better because (1) it's not flash and (2) your dataset is slightly more detailed.

I do miss boatingsf's animations, because it gives me a better idea about the path and trajectory of a ship than just a current position and heading.

[camiller]

In the popup for a particular boat click "Show Vessel's Track" which appears to show a set of previous position reports with a line drawn between them.