Examining the proxy logs at a satellite office, I discovered that one of the staff seemed to be accessing a site called Rubbermaid.co.uk - each to his own!
Management suggested that I send round a generic warning, reminding people that browsing was logged and that disciplinary action might be taken if dodgy sites were accessed.
Ads a matter of research, I visited the Rubbermaid website, to find that they were suppliers of things such as rubber mats and waste bins!