Precisely the reason I wrote the very useful "human.txt" captcha: http://www.mrspeaker.net/2010/07/15/humans-txt/ http://www.mrspeaker.net/2010/07/15/humans-txt

Precisely the reason I wrote the very useful "human.txt" captcha: http://www.mrspeaker.net/2010/07/15/humans-txt/ http://www.mrspeaker.net/2010/07/15/humans-txt/ Stops those pesky humans wasting precious robot bandwidth and is quite a bit harder than the Quantum Random Bit Generator captcha ;)