I am very pleased at this time with the performance of the plugin. After installing the plug-in I had over 14 blocks the first day from countries I didn't want to share my website with.
If there was one recommendation I'd have is to be able to reverse the selections and choose which countries I want to see my site and not go through a huge list, or ones I don't want. Its such a minor item compared to the huge plus and benefit this plugin offers.
This is my first review of a plug-in for WordPress. I made it a point to join and register just so I can post this.