A look at an example of anti-spam algorithm

Posted by pragmaticCamel on Programmers See other posts from Programmers or by pragmaticCamel
Published on 2010-12-29T16:18:09Z Indexed on 2010/12/29 17:00 UTC
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algorithms

What is a good approach to an anti-spam algorithm for a website similar to reddit? Their anti-spam algorithm seems awfully broken (banning on words in the title and doing a horrible job for that matter). Considering a post spam because it has the word 'spam' in the title is really not a wise choice.

Anyway, how can one approach such problem ? Are there any tools that help in such cases?

Also, what are the /technical/ reasons behind reddit's choice not using reCAPTCHA on every post submission? It seems like a much better solution than what they have right now. Since reddit is basically a community-driven website why not give such power to the communities' trusted members?

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