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, the ones that try to gain unauthorized access to forum functions or otherwise suck up bandwidth for no reason. I block these IPs for at least five years.