Is_Googler

This plugin provides a conditional template tag that determines whether or not a visitor is arriving from any of several popular web search engines. You can use it to show searchers an extra welcome message, or another block of ads, depending on whether you are nice or skeezy.

Download: isgoogler.txt – save this file, and rename it to isgoogler.php before uploading it to your server.

Instructions

Place the following code in your template:
<?php if is_googler() { ?>
Welcome, Web Searcher! (or whatever)
<?php } ?>