The is a example how to load a kml file of Google Earth in your article.

{mosmap kml='http://tech.reumer.net/images/florida.kml'|overview='1'}

JavaScript must be enabled in order for you to use Google Maps.
However, it seems JavaScript is either disabled or not supported by your browser.
To view Google Maps, enable JavaScript by changing your browser options, and then try again.

You can set the center of the map closer to your kml-file center instead of using the world map first. use the parameters centerlat, centerlon and zoom. There will be no extra marker on the map.

{mosmap centerlon='-81.227834'|centerlat='27.107983'|zoom='7'| kml='http://tech.reumer.net/images/florida.kml'}

JavaScript must be enabled in order for you to use Google Maps.
However, it seems JavaScript is either disabled or not supported by your browser.
To view Google Maps, enable JavaScript by changing your browser options, and then try again.

If you place a link inside the infowindow then it will always open in a new window or tab!
You can use a kml-file and GeoXML to open a link in the same window (see kml sidebar).