Akismet is a free wordpress plugin which checks your comments against the Akismet web service to see if they look like spam or not. This plugin is a free plugin and it comes with the wordpress package but you need a WordPress.com API key to use it. You can review the spam it catches under “Comments.”
How to activate Akismet plugin?
You need WordPress.com API Key to activate the free Akismet Plugin. You can get the WordPress API key by registering in wordpress.com. Once registered, log in and go to your global dashboard and then go to “profile”. There, you will be able to see the API key. It is a lettered word consisting of only numbers and alphabets. Now, In your wordpress blog’s admin panel, go to plugins and activate “Akismet”. It will then ask you to enter the Akismet key and you can enter the key you got above and it’s activated.
Akismet Is a very important plugin because of the increasing number of spammers. Without it, it is almost impossible to check all the comments you receive as a large number of them will be spams. You can also change the settings of Akismet under the Plugins tab > Akismet Configuration. You can set the Akismet to automatically discard spam comments on posts older than a month by checking the check box.
In other words, Akismet is the most important and the first plugin that you need to install once you create your wordpress blog.