Just downloaded your plug-in but I am unable to use it as a PHP error returns when I attempt to view the plugin [Browser Blocker] settings page in the wordpress admin area.
Warning: call_user_func_array() expects parameter 1 to be a valid callback, function 'BrowserBlocker_Options_Page' not found or invalid function name in <my directory>\Wordpress\wp-includes\plugin.php on line 406
It would be great to get some feedback for this maybe the plugin isn't compatible with WordPress version 3.6.. who knows?
I won't give a rating for the plug-in [just yet] as I haven't even taken it for a spin so it would be unfair to do so.
Thanks for your time,