I am a sysadmin at a university. We started receiving phishing emails attempting to trick our users into going to the website to give up their passwords: http://bit.ly/TSlVTd which translates to
You should not allow phishing on your website. Google Docs has a link at the bottom of each page that allows someone to report sites that violate their terms of use - you might add that to all of your webpages if hackers are going to exploit your service like this.