I wrote an article about it in FA a few issues back explaining the logic and
showing off the code. I have to say that since I implemented it, the amount of
spam I get to certain addresses (addresses only on the HoF site) is way down.
As for robots.txt, that only comes into effect when a robot reads and obeys it.
I've never seen a spambot that obeys it. Reads it, yes. They use the read to see
directories that normally aren't indexed and go to them specifically.


> I've been using a UDF called "emailAntiSpam", which replaces an email
> address in the source code with extended characters which supposedly can't
> be crawled and picked up by spambots.
>
> So my address:  [EMAIL PROTECTED] would look like:
>
> <a
> href=""> > &#101;&#97;&#114;&#108;&#121;&#119;&#104;&#105;&#116;&#101;&#115;&#109;&#105
> ;&#108;&#101;&#46;&#99;&#111;&#109;" target="_blank">Notify the
> Webmaster</a>
>
> My problem, my client thinks they are still being picked up and used for
> spam - I also have a robots.txt file set to disallow bot crawling.
>
> I've had both these in place since day one, when the site was posted about 3
> months ago.
>
> Does it actually work?
>
> Thanks, Mark
>
>

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