gns wrote:
Many mailing lists these days require entering of a verification code or
characters displayed on the page while subscribing. This ensures the
subscription is done by a *human* and not a bot.
"CAPTCHA" schemes, in which the verification code is display as an image
need to have an alternative method for people who can't see the image,
and unfortunately, many of those alternatives are automatable.
(Of course, even if it's not automatable, some spammers see enough value
to even pay people to manually spam - witness wiki spam like that which
hits genunix's OpenSolaris wiki from time to time.)
--
-Alan Coopersmith- [EMAIL PROTECTED]
Sun Microsystems, Inc. - X Window System Engineering
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