A while back, I explained how to share your custom cache data in Google Maps. This process still applies, but there is an alternative method if you do not own a copy of GSAK. I'll describe the steps I used to create this map of the Caddyshack caches (from the new Bushwood Memorial cache series).
1. Go to the Caddyshack Tournament Caches bookmark page (or create your own).
2. Check all the boxes in the left-hand column, then hit the "Download to .Loc" button.
3. This creates a .LOC file containing all the caches, which you can now open in Google Earth.
4. Now, from within Google Earth, use the "Save Place as..." option to save this file as a .KML file.
5. Finally, launch Google Maps in your browser, click on "My Maps" (provided you have a Google account), "create new map", and "import". Choose the KML file you just saved to your hard drive, and that's it.
You now have all of your designated caches available as a layer in Google Maps which you can access from any computer or mobile device with internet access!