This plug-in monitors your post and sites for the keyword density of your chosen keywords. Simply tell the plug-in what keywords to monitor and the plug-in will give you an indication as to the ideal keyword density for those words.
As you type your post you will see a live indication of the keyword density in the post you are writing, this updates its self periodically so you can adjust your post to suit.
A section on the Dashboard gives you a site wide indication of the density of the keywords you have chosen to monitor.
To get the free plug-in please click here
More details of its usage will follow.