How can I prevent spam on sites which I control?

Posted by danlefree on Pro Webmasters See other posts from Pro Webmasters or by danlefree
Published on 2012-02-02T03:16:14Z Indexed on 2012/10/15 3:53 UTC
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spam

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spam-prevention

This is a general, community wiki question to address all non-specific spam prevention questions.

If your question was closed as a duplicate of this question and you feel that the information provided here does not provide a sufficient answer, please open a discussion on Pro Webmasters Meta.

For purposes of this question, spam will include:

Any automated post
Manually-posted content which includes links to spammers' sites
Manually-posted content which includes instructions to visit a spammer's site

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