vitaly rules google - How to block spam referral traffic
15094
How to fight off Google Analytics referrer spammers?
20094
Block a random domain pointing at my dedicated IP
91094
Inspect the referrer in PHP
50652
How do I block this (carrier) advertisement dialog?
24190
Block specific URL on web browsers
30409
Prevent malicious bots from posting spam
141141
How does a Reverse DNS lookup work with regards to spam filters?
70410
Using competitors domain with different ending to boost traffic
93561
How to stop people from using my domain to send spam?
85575
How to prevent user registration
46422
How can I prevent spam on sites which I control?
76014
How does Stack Overflow handle spam?
120416
Spam module for human spammers
146171
Firefox NoScript: How to block only one particular domain?
27000
How to excludes my visits from Google Analytics?
139180
Why is my e-mail still being picked up as spam? Using mail() function
107534
How reliable is HTTP_REFERER?