Your Planet Today displays a satellite map of the Earth in the sidebar of your blog. With the Google Maps 
integration, you can zoom in and pan around. All the satellite images used to generate the map are between 
3 and 36 hours old. With this widget you can monitor global weather patterns, dust storms, snow cover, and 
air quality.
Read more about Your Planet Today and navigate a full screen map <a href="http://www.wronkiewicz.net/earth/map.html" rel="nofollow ugc">here</a>.

Your Planet Today widget

Displays an interactive map of the Earth generated from recent satellite photos.

MapQuest

MapQuest Map Builder is a quick, easy tool for adding maps to your WordPress posts or pages. With Map Builder you can easily add locations to the map via search, enter lat/long coordinates, or drop points directly on the map.
For each point added to the map, you can customize the map pointer icon, title and description. You can even use custom images that you host as the map pin. You can format text inside the descriptions as well as add images and videos to the pin descriptions.
Map Builder also has tools for drawing lines and shapes on your map. Create lines, rectangles, ellipses, and custom polygons on the map and set the color, opacity, border color and border width for each polygon on the map.
MapQuest Map Builder inserts a map as either an embedded interactive map in an iframe or can also insert as a static image file.
No API key or other sign-up required. Start making maps instantly!
Read more at http://features.mapquest.com/mapbuilder/

MapQuest Map Builder for WordPress

MapQuest Map Builder BETA plug-in for Wordpress.

Your Planet Today widget vs MapQuest Map Builder for WordPress