Suddenly my website is getting hits from referrers of lots of porn sites from ips in Russia and Ukraine. Have blocked those ips but still getting hits. How/why is this happening? How can I stop it?
Like phpSiteMinder said, referrer spam. They spam up your access logs in hopes that webmasters look at them and visit their site. No matter how many you ban, they will keep coming. Most are using sock proxies so have thousands of IP's to use.