... I am unsure but it may be easier to enforce a rule that only coded links are permitted.
If you open a live (clickable) link on a page, your browser send a referrer that contains information about where you came from, ie. which, if any page requested the new one. Web analyser software seeks such information and prestents it to the webmaster who can then decide on what to do with that information.
Here's how a coded link should look:
To achieve this, type the link in or paste it
Highlight the link
Click on the "#" button at the top of the toolbar
Done and dusted
Furthermore, a good tracker software will track you IP address right back to wherever you may have accessed the site from, so watch it if you feel tempted to access this site from work.
On that note, always remember you leave your footprints everywhere.