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Comment require a bit of human intuition (Score 1) 183

Forums and blogs are susceptible to post spam because most are large opensource or commercial scripts. The fact that there are thousands identical scripts makes them a prime target to spammers. The trick to prevent forum spam is to confuse the spam bots. Most all bots will fail to register a user if given something unexpected. For forums I administer, I wrote a vbulletin mod that requires a bit of human intuition to solve (not much mind you) such as have a text input field that must remain blank. This simple measure has prevented nearly 99% of forum post spam.

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