How do you limit internet access at the office?

[dralison]

I recently did a blog post that covers the topic of Internet Access for employees. As a small business owner I've generally been pretty liberal with the technical limitations that I enforce on my employees and contractors when they work in our office; basically we have a written policy about it but otherwise allow people to access just about any site. If someone is visiting a porn or gambling site from the office it's grounds for immediate dismissal.

I mention this in the Datamation forum because I'm interested in getting feedback from a slightly different audience: since most folks here are IT managers (I assume), what is your take on this? Have you implemented a one-size-fits-all policy and applied it across the board or do you limit what people can see on a case by case basis? I'm thinking things like Facebook, Twitter, Hotmail, etc.

--David
www.sharedstatus.com