I have been using the obfuscation method for some time now, and while it may
not totally eliminate spam harvesting, IMHO it certainly does slow the
harvesting down.
I have used the javascript method also, with the addition of a gif
displaying the e-mail address for folks that have javascript disabled. I
have found this to be effective also.
Mark is quite correct when he says that complex e-mail harvesters will
probably work around these methods, but it appears that most of the
harvesting is done by very basic programs that are looking only for e-mail
addresses stored in conventional format.
Guys hate to rain on your parade but if your browser can
understand that obfuscation what makes you think that a email
address harvester is not going to be able to?
These guys are writing complex viruses that harvest email
addresses directly from people's Outlook contact lists,
surely they can understand a little javascript and work with
character entities.
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