How can one detect copying a link in a browser?

Question

Yesterday I had a chat with a taxi driver and upon mentioning that I am a programmer, he told me that a couple of days earlier he had experienced the following: upon trying to c

Answer 1

Address bar - no, not possible, if a browser allowed a page to intercept the addressbar then it would raise a lot of security issues.

It was most likely the page either preventing a right click on a link, or doing CTRL+C within the page itself.

If it was IE, then there's the possibility that they unwittingly installed an ActiveX control when visiting the site, which may have prevented them from copying a link from the address bar.