Google launched Google Related in April of this year. Since then, we haven't heard many complaints about it.
It basically loads a frame on the botton of the web pages you visit with related content from around the web.
Recently, a WebmasterWorld thread has some webmasters upset with the feature. They say it installs too easily when installing the Google Toolbar and ultimately will lead their customers off their site and on to their competitors site.
As a site owner, I am not in favor with Google showing a toolbar of related searches -- aka MY COMPETITORS!
The question is, is there a way to block it from loading on your site? There may be a way. One webmaster said all this is, is an iframe. So to block it, just add the following code to your CSS.
iframe.grelated-iframe { display: none; }
So hopefully only your competitor's sites will recommend you and not the other way around.
Forum discussion at WebmasterWorld.