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Posted by Greg N. on 10/19/16 11:22
hyweljenkins@hotmail.com wrote:
>>I'm very familiar with the OP's
>>problem, and I've solved it that way.
>
> Explain it then. I bet it doesn't work as well as you think; certainly
> not anywhere near 90% effective. Robots don't ahve to honour the
> robots meta tag that you suggest, so why would they? After all,
> spammers are generally somewhat unscrupulous.
I believe the guestbook spammers don't run their own crawler, it would
be far too resource consuming. Rather, they work off search engines,
for instance,
http://www.google.de/search?q=guestbook+url+email+comment+name
gives them more than enough spam targets.
Google *does* honor the "robots...noindex" directive. So keeping one's
guestbook URL off google ist indeed *extremely* effective to avoid
guestbook spam.
The second trick is to change the guestbook's URL every once in a while.
Once the spammers get hold of your URL, that's the only way to get off
their hook.
I have a number of sites with guestbooks. They have been on the same
URLs for years. The guestbook spam phenomenon started about two years
ago and becam worse and worse. 5 months ago, I changed the guestbook
URL and put in the noindex directive (only on the guestbook page) and
have not gotten a single guestbook spam ever since.
So, for me, this has worked not 90, but 100%.
--
Gregor's Motorradreisen:
http://hothaus.de/greg-tour/
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