Erik Fantasia

With Map My Posts, you can easily create maps plotting the location of your posts, based upon your existing tags or categories.
<ul>
<li>3 map types available: Google Maps, Google Static Maps (PNG image), and Geochart Visualizations.</li>
<li>Embed maps on any page using the shortcodes [mmp-map], [mmp-staticmap], and [mmp-geochart]</li>
<li>Associate with a country or any specific map location.</li>
<li>Map My Posts uses existing category or tag names to help define country associations.</li>
<li>Widgets available to display maps in the sidebar.</li>
<li>Full control over size, colors, and click functions.</li>
<li>Perfect for travel bloggers, touring musicians, or anyone else that wants to Map My Posts!</li>
</ul>
Get Help
Please leave a message on <a href="https://wordpress.org/support/plugin/map-my-posts" rel="ugc">the wordpress.org support forum for Map My Posts</a>

Map My Posts

Less is more. Light is better. You original idea is awesome. Keep going ! These updates would be appreciate : 
- an update to use the new Google Map API,
- make it 100% WPML compatible (join translated locations using shortcode static map)
- be able to add our own custom taxonomy from the dashboard 

Your original idea is awesome

Map My Posts allows you to display a Google Map or Geochart visualization, associating map locations with your existing categories or tags.

parelius

Embed maps from the following domains into your WordPress blog:
<ul>
<li>www.bikemap.net</li>
<li>www.runmap.net</li>
<li>www.inlinemap.net</li>
<li>www.wandermap.net</li>
<li>www.mopedmap.net</li>
</ul>
You can do this using simple shortcodes, e.g.:
<ul>
<li>[bikemap route=”1026736″]</li>
<li>[wandermap route=”123456″ extended=”false”]</li>
</ul>
The following shortcodes are allowed:
<ul>
<li>[bikemap]</li>
<li>[wandermap]</li>
<li>[runmap]</li>
<li>[inlinemap]</li>
<li>[mopedmap]</li>
</ul>
The following attributes are allowed:
<ul>
<li><code>route</code>: The route id (an integer)</li>
<li><code>extended</code>: If route info like elevation, distance etc. should be shown (true|false, default:true)</li>
<li><code>width</code>: The width of the map (an integer, default: 640)</li>
<li><code>height</code>: The height of the map (an integer, default: 400)</li>
<li><code>unit</code>: The unit used in the route info (km|miles, default:km)</li>
</ul>

XMap

XMap lets you embed maptoolkit maps (like www.bikemap.net) into your WordPress blog.

Map My Posts vs XMap