One would hope the Nottingham Uni are on to this and are trying to dissuade their students with the message that "What goes on the internet STAYS on the internet" Personally I would add "Do you want your parents getting frisky and watching some porn and seeing you have sex with this woman? Do you think any of you would be happy with that?". The Ick Factor would probably be enough to put an awful lot of them off!
And lets be realistic. She may have had 5000 enquiries (which I doubt) but the vast majority of them wont be from freshers who are actually prepared to turn up. Most will be from much older sexual inadequates who spilled their guts to her then had a wank about what they would like to do to her. And the vast majority of the students will have emailed with bravado egged on by their friends but would be too terrified to actually do it.
But yes, grim. And also, another vote in the "no way is she 25". If she is 25 then I am 30! (I am 51 for the record)