Pretty good functionalities! But, just a tip for those who are getting started with this plugin: be careful for 404's. If your site has too many predictable 404's(like missing images, favicon or other links to broken resources) you can get invisible to google and other search engines because of unwanted lockouts.
So, if you have missing files, put them back online or remove links to them.
Also, I want to suggest an improvement: if several hosts attempt to access some 404 link, it should go to some kind of whitelist, in order to avoid unwanted lockouts caused by bad code or missing files. That number could be user-defined as well.
Despite this problems, this plugin rocks!