Yes! Randomize the questions, but keep the answers static! That way it will be real fun! :-))

Oups, when did this BOFH mode kick in? ;-)

Seriously, I think this sort of welcome message (maybe route them to a introduction page when they first log in?) will certainly do no harm. I´m just quite sure it will not make much of a difference, either.

Greetings ...
Andreas