If you found a Mapplet that you want to share? Here’s a simple method to link directly to a Mapplet, and it will even get rid of the Mapplets interface typically shown in the My Maps tab. The trick is to construct a URL in the following format:

http://maps.google.com/maps/mpl?moduleurl=[insert URL to Mapplet XML]

You can get the URL from the 'View source' link on a Mapplet's page: For example, the following URL will send you directly to the USGS Earthquake Mapplet:

http://maps.google.com/maps/mpl?moduleurl=http://earthquake.usgs.gov/eqcenter/mapplets/earthquakes.xml

This gives you the ability to link directly to Google Maps and keep your user interface front and center - I'm looking forward to seeing how you use it.

Source:→ Google LatLong Blog