Thursday, November 29, 2007

Spam Prevention

I had never seen this method of spam prevention before.

Generally the site prompts you to enter in the characters that are distorted in a picture file (the bots can't identify what the picture is of even though it's a picture of text). I've never liked these because it's often very difficult to tell the difference between a zero and an oh and so forth. Sometimes they're even case-sensitive and that creates a hash of problems with V's, X's, and other letters for which the only difference between upper and lower case is size...

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