Bye-bye, Yahoo!
I am probably the last webmaster in the world to ban Yahoo! Slurp from indexing my sites. Now, I am resolved. Bye-bye, Yahoo! You were just behaving too badly.
iptables -A INPUT -s 66.196.64.0/18 -j DROP iptables -A INPUT -s 68.142.192.0/18 -j DROP iptables -A INPUT -s 72.30.0.0/16 -j DROP iptables -A INPUT -s 74.6.0.0/16 -j DROP