Recently I started to receive a lot of spam messages from contact form of my blog. It really makes me crazy! I hate spam and I hate spammers! Great plugin SpamKarma protects my posts but it doesn’t do anything with contact form. So, I googled it and found a patched version of Ryan Duff’s plugin. There is a customized question which helps to identify a human (2+2 by default). It can be changed easily via admin interface. Enjoy!