Here's a current, interactive Google map of where my trackables are worldwide. I used the steps outlined earlier, but this time each waypoint is marked with the TB name, its distance from my home, etc.
I also played with the data on the great GPSVisualizer website, where you can use many interactive overlays. Here's a Yahoo map (just a screenshot, not the interactive HTML, although the latter is possible):
Here's a topo map screenshot:
Lots of nice looking choices, and they're all interactive (zoomable, each waypoint displays the trackable name beneath the cursor, etc.).