In the past few weeks, I started playing around with APRS again. Interest in APRS seems to come and go for me over time. It has the technical intrigue of figuring out how it works and the fun of exploring radio propagation paths. (If you are not familiar with APRS, K9DCI has a good introduction to it.)
The web site aprs.fi has some interesting hooks built into it that maps the location of APRS stations. I embedded a map here on my weblog page that shows my home station position (K0NR) and other stations in the vicinity. I intentionally blocked stations that only exist via the internet (no RF).
This map is dynamic in that it will update to show the latest APRS activity. It is fun to try select different map styles (courtesy of Google maps). Also, you may want to look at the html code to see how this is done.
73, Bob K0NR