Think of ScanSafe as a kind of enterprise NetNanny for Web 2.0.   They just came out with a report that paints the blog world as a seedy hangout for foul-mouthed pornmongers.

From Ars Technica...

"ScanSafe's Monthly "Global Threat Report" for March 2007 says that
up to 80 percent of blogs host offensive content, ranging from "adult
language" to pornographic images. The company suggests that businesses
should be aggressive about preventing users from accessing some or all
of this material. And of course, they'd hope that you'd use their
products to do so.

ScanSafe says that it discovered the "offensive" nature of blogs by
analyzing more than 7 billion web requests coming from their corporate
customers."

I don't think professional people need a piece of technology to prevent them from seeing a dirty word here and there.  If your employees are accessing truly inappropriate content at work, perhaps you should beef up your screening not in the web browser, but in your HR department.   Just a thought...