We once had a slacker first line supporter..
Who spent much time at websites like chocolatestarfishwarrior.com and other stuff you really don't wanna know about. Real nasty stuff including the animal kingdom.
Obviously when there was a network bandwith issue somebody did some looking around on the firewall proxy and that was discovered.. End of month an email was sent going like this :
Dear network user,
For your convenience we provide the below list of websites that were in your frequent use.
Please make sure to add those to your IE bookmarks in order to facilitate easier access to those urls.
1
www.chocolate...
2etc
3etc
4
5
6
7
8
9
10
Anyway, i don't remeber the exact wording, but it pretty much boiled down to "cease and desist you perv"
It was extremely effective.