this study, and all the replys just reminds me of me of one of favorite movie quotes of all time: "A person is smart. People are dumb, panicky dangerous animals and you know it."

This sounds good in theory, except that it ties you down to a single computer.

There are so many ways around this "problem" portableapps dot com for one, password keeper apps (Password Gorilla works on all 3 major OSes), synced bookmarks with Delicious is my current setup - but I have had a few over the years. Now "ties you down to a single browser" or "requires you to have your USB drive with you" I would agree with - but not a single computer.