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I like Damien's "Negative Captcha" approach:
{Link}
It uses a hidden (via CSS) email field in addition to the displayed email field. If that field has a value, the comment was submitted by a bot and can be deleted. When humans enter comments, that field will always be empty.
I like Damien's "Negative Captcha" approach:
{Link}
It uses a hidden (via CSS) email field in addition to the displayed email field. If that field has a value, the comment was submitted by a bot and can be deleted. When humans enter comments, that field will always be empty.