This plugin for WordPress will give up to four personalized messages depending on the origin of the visitors of your blog. It’s originally based on the rthanks plugin by Alamsyah Rasyid.
If you are thinking about increasing your feed subscribers, if you only want to show publicity to some of your visitors, if you want to say thanks to your visitor from search engines or socialbookmark,… If you want to show diferents messages to your visitants depending on their origin, this is your plugin.
Comments, questions and bug reports are welcome: http://www.berriart.com/personalizedcare/