: There aren't "best practices" for that. To stop spam you need to be creative. Don't use the traditional type of captchas which ask the user to enter some text from an image into a text

@Annie201

There aren't "best practices" for that. To stop spam you need to be creative. Don't use the traditional type of captchas which ask the user to enter some text from an image into a text box. As an owner of a big forum hosting company I can guarantee these Captchas do not stop spambots, not even the hyped ReCaptcha.

Think of some security question anyone would know how to answer. For example: "Which number is larger: 1 or 328?". For a number of reasons this is a fairly effective way.

Akismet is also nice but that is if you don't depend too much on user input because it often flags legit comments as spam comments. So it's not useful for forums, only for blogs and similar websites where you can afford to lose an user or 10.

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