I think that she means that the WTBTS could record which documents were being downloaded by user "x" if they wanted to record that for later review.
Also they can see if user "x" has logged in 379 times in the last week, where the average user logs in 1 time a week so that would set off a flag that this users account info has been stolen, shared etc.
I would think also that they could see what Ip address is being used to log into the site so if the user account is being logged in from all over the world it could set off a flag.
On another note, I believe it is possible for the WTBTS to record the page that a user left just before landing on their site. And if that person log into the site they would be able to link up , for instance, Elder Lurker leaves jwfacts.com and then next logs into jw.org and logs in. I beleive they would be able to put 2 and 2 together and see that Elder Lurker has been checking out Paul Grundys site.
Even if you do not log into the site, I would think that EVEN visiting JW.org just after leaving any apostate site, even without logging into their site would show that "someone" from Huntsville AL area (IPinfo) left Jehovahswitnessrecovery.com and then landed on JW.org and went to page x, page y, page z etc,..
They could see the exact page you left and also your history on their site. This info could be sent to the local body of elders to possibly unt a person down.
Not to scare anyone from lurking, just make sure that you visit a non apostate site just prior to landing on their site.
Any techies that can confirm or deny this info, I could be wrong about some if not all of it as I have just gleaned this info over the years and am in no way an expert.
NJY