One of our latest requests was to implement a data leakage gateway and endpoint solution. If you don't know what that is, it's basically an appliance that you configure as an internet proxy that looks for sensitive data like credit card numbers, social security numbers, or whatever else you want and blocks that data from being leaked out on the Internet.
Well I found a solution that does this, and is absolutely free. It's called MyDLP Community Edition. Check out this video that shows what DLP can do (Warning: The computer voice is creepy):
Do you use MyDLP at your company? If not, what do you use for data leakage protection? Let us know what you are doing to keep people from leaking your data in the comments!