need help writing a proper rule to block referrer in htaccess

[schwim]

Hi there guys!

I'm having a problem on one of my community sites:

My referrers are being spammed.  It was easy to block initially, because keywords were in the URL's that would never be found in a legitimate keyword for my site, and I could safely block them.  Now the spammers are using ambiguous URL's in hopes of a click to sell their wares, no longer relying on keywords in the URL:

Old referrer: http:// www . buyillegalviagra . com
New referrer: http:// www . mormonsarecool . com/#

the majority of the spam referrers have "/#" appended to them, so I thought I'd simply add a rule blocking that, but I'm having a problem doing that.  Here's my current method of blocking via htaccess:

[code]
SetEnvIfNoCase Referer "^/\#" BadReferrer

order deny,allow
deny from env=BadReferrer
deny from 80.227.0.153
deny from 69.16.200.85

<Files 403.shtml>
order deny,allow
allow from all
</Files>


ErrorDocument 403 /403.shtml
ErrorDocument 404 /404.shtml
[/code]

but it's not working.  I created a page linking to my site on another domain, and accessed it with a pound sign at the end of the URL, and when linking, it doesn't get blocked.

How do I get my current rule to block any referrers ending with "/#"?

I'm very appreciative of any help you might be able to provide.

thanks,
json

[schwim]

Wehheell, thanks for everything guys!

It may take me some time to try all of these suggestions, but I promise I will get back to you with a full report of how each of these worked.  It's the least I can do for all the time you've put into it.

Again, thanks so much.  I'm humbled at the level of enthusiasm.

thanks,
json