You don't have to do anything to configure Akismet besides entering your API key, just activate and relax. However you do need at least WordPress version 2.0 or above for everything to work. The latest version of the plugin is 2.2.7.
plugins
directory inside of wp-content
.Akismet is available for over 20 other systems and platforms.
Just to re-iterate, if you don't fall under our pro-blogger or enterprise uses, Akismet is totally free for you to use on your blog.
If you're going to be using Akismet in a way covered by our commercial use cases you need to get a commercial API key, which you can purchase using the easy links below.
You can get Akismet for other systems such as Movable Type and Blojsom on our development page.
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