By Thaya Kareeson (http://omninoggin.com)

WP Greet Box allows you to display custom messages to visitors, depending on where they originated from. For example, if a reader comes to your blog from Google Reader, the default message will welcome them as a "Google Reader" and give them the ability to subscribe to your blog's RSS feed. Similarly, when a visitor comes from Twitter, you can welcome the Twitter user with the option of following you on Twitter.