#2 Oct 09, 2011 07:34
You can't effectively protect your blog from referrer spam unless:
- spam comes from the same IPs every time
- spammers request weird/non-existing URLs
- you get several hits at the same time with the same referrer from the same IP. I usually get 6 spam hits within 2 seconds time span
Spam referres are usually base domains with no extra path or params.
With all these factors in mind we can create an effective plugin to stop referrer spam. We can assign weights (karma) if a hit includes the factors I wrote above, and at some point block the hit if it gets enough spam weight.
I may create such plugin one day cause I my websites get a lot of referrer spam hits too.