Gab Captcha 2 free WordPress plugin

Gab Captcha 2 is a simple, easy-to-solve and efficient captcha plugin for fighting spam in WordPress comments. It adds an easy Turing test before each comment form. The Turing test consists of emphasized characters (red by default) that you must type in a text field. The plugin can be configured in your administration area. The captcha can be displayed using JavaScript for maximum security (recommended) but can also be displayed without using any JavaScript code. This can be configured in the the plugin settings. You can choose to insert (or not insert) the comments into the database on failure to provide a valid solution. Inserting comments on failure can be useful if you want to be sure that blocked comments are really spam. On the other hand, choosing not to insert the comments on failure can lower your database usage as writing to the database is an expensive process. On failure to provide a valid solution, a visitor will have the opportunity to try again and will not loose his comment. Gab Captcha 2 currently comes in three languages: English (default), Russian (partial) and French. You are welcome to propose your own translation or to update existing ones, especially the English one as I am not a native English speaker. Important notes: Depending on your settings, this plugin may requires Javascript to be able to post a comment This plugin can automatically approve valid comments depending on your settings This plugin requires PHP 5