hmmm effectively this could be an interesting question for a job interview to gauge the reaction of the candidate to an ethically challenging request.
The interviewer will ask for facebook password and then evaluate how the candidate will react.
I can imagine several possible answers with different degrees of employability.
The preferred answer would be something like:
"you may know that sharing password with 3rd parties is forbidden by Facebook ToS and may expose the company to serious potential liabilities regarding privacy of employee.
In my opinion as, potentially, employee of this company I would rather go for a different approach like asking to show the page, talk about how the profile is used, etc"
Such an answer will show that the candidate is able to quickly forecast problems and find a good solution to them is a positive, non confrontational, way.
Other answers such as "no, never corporate swine", "yes, sure", "face what?", etc. will be indication of a candidate that is not able to see or confront a problem.
An answer like "no, I care about my privacy" is somehow borderline... I would accept it, but it isn't an answer that open dialogue, it closes it instead.
Bad negotiation strategy.
I have to interview a candidate for a job soon, maybe I should use this trick question.
Any employer seriously asking for facebook password is really not the best you can have, and you are better off not working for them.
However many people have more than one FB profile (one for close friends and one for other people, parents, etc)