I totally agree with Abdelhadi Touil. I myself uninstalled the plugin because I do not want it to block visitors from seeing my website! If Mr. Marshall would only read again what Mr. Touil is saying. I consider it to be a real shame if a visitor of non-malicious intent is blocked from visiting my site due to Zero Spam plugin. The only way I know how to prevent that is to uninstall the plugin. Too bad.
