In addition to sharing kml, gpx, csv and .minimap files detailed elsewhere in the help documentation, the Minimap Sidebar offers the following addition functionality via the 'Share Location' address list context menu entry.
Get Lat/Lng - this will return a prompt where you can copy and paste the raw latitude,longitude of the selected item:
Get Lat/Lng HTML - this will return an HTML snippet where you can copy and paste details from the selected item. The HTML code produces a link to Google for the location, a microformat Geo class abbreviation and a geotag icon all in one:
Get Link URL - This option will provide a link to the location using a map service I have set up:
Email Location Link - this will open up your default mail client with the above link in the body.
Embed Map on your site - this will open up a dialog where you can grab iframe embed code to place a dynamic map on your site.