Interesting plugin review down at Weblogs Tools Collection about a plugin called Referrer Detector. It welcomes people based on where they are coming from so that you can always give them a warm welcome. Here’s a screenshot of what it looks like:

It’s a nice idea which would work with most websites, regardless of if there are about satellite internet services or the Isle of Man. The nice thing about the plugin is that it’s driven by AJAX so it plays nicely with caching plugins (not like some other plugins I’ve used in the past).
Enjoy!