The following IP addresses have been blocked from accessing this site for various reasons:

60.190.240.73 (China)
62.75.208.13 (Germany)
69.64.87.7 (US)
75.53.1.246 (US)
79.176.154.131 (Israel)
80.237.209.25 (Germany)
82.99.30.0 - 82.99.30.255 (Sweden)
84.108.213.215 (Israel)
82.194.66.30 (Spain)
84.255.192.60 (Slovenia)
89.122.224.179 (Romania)
91.142.210.195 (Spain)
98.173.139.6 (US)
121.78.88.33 (Korea)
194.183.88.249 (San Marino)
195.80.159.4 (France)
204.15.135.98 (US)
205.234.109.226 (US)
209.25.195.74 (US)
212.100.69.11 (Nigeria)
222.231.24.105 (Korea)
222.236.47.94 (Korea)

I only block the most obnoxious IPs.