email riddler

Email Riddler is an online tool by Dynamic Drive that encrypts and transform your email address into a series of numbers when displaying it, making it virtually impossible for spam harvesters to crawl and add your email to their list.

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  1. similar (i think the original) idea here
    he seems to update the code about once a year.

    the spammers still get through, but not nearly as many. (whether through reverse-engineering the encryption or just reading the post-processed page, i dont know)