activate the script). To give you a better idea, here is a direct code snippet from their site:
They aren't the only culprits, other well known examples include Google (with their Google Analytics / Urchin tracking code) and Digg (with their code which displays the number of diggs for a given article)
An other bad example would be Zoomerang. They claim
The conclusion, if any, is the fact that managers (who buy the services of these sites) mostly have no idea about the real quality of service they are getting. While in some cases it may be reasonable for them not be an expert in the respective domain, they should at least ask an independent party who can accurately evaluate the service for them. But this is the topic for an other rant...
PS. If you are interested in building better forms, go listen to episode 41 of the boagworld.com podcast.