Blue Captcha is a powerful and customized captcha plugin that protects your WordPress site from unwanted spams and persons. The plugin is easy to setup and activate high protection against spammers, bots etc.
X Forms Express is the brand new form creator plugin for WordPress users. Using this plugin you can easily create beautiful professional forms and display them wherever you want in your WordPress site.
With new WordPress plugin called Comment Auto Blacklist automatically adds IPs of spam comments to comment blacklist settings field in your WordPress site.
Although there are many WordPress plugins, hacks and other cPanel tricks that allows you to block visitors on some defined conditions. Here is an easiest way of blocking visitors from selected countries and it is the best method if you want to target traffic from a specific country or region.