Plugins and Widgets Stop WordPress Spam

The wordpress plugins are arranged broadly by category of usage. As far as I know, all these plugins are compatible with the latest WordPress version. Please feel free to suggest great plugins in comments that I can add to this list.

• Akismet – intelligently blocks spam comments. Checks your comments against the Akismet web service to see if they are spam or not.
• Spam Karma 2 (SK2) – is an anti-spam plugin for the WordPress meant to stop all forms of automated Blog spam effortlessly, while remaining as unobtrusive as possible to regular commenters.
• Bad Behavior – is a set of PHP scripts which prevents spambots from accessing your site by analyzing their actual HTTP requests and comparing them to profiles from known spambots.
• Math comment spam protection – Adds a math question to comments form to detect human input and block automated spambots.
• WP-Contact Form with Spam Protection – creates a contact form on your blog, through which your readers can contact you easily.