While looking at this question Not actively seeking work in Careers: I'd like to display this I cleared all the check boxes (permanent position, telecommute etc.) to see if it then showed me (on my view of the profile) as "passively seeking" (or some such wording).
However, the section simply disappeared and now I can't see a way of getting it back.
I'm not actually looking (even passively!) at the moment which is another reason I wanted to change the options, but should things change it would be nice to get the option back!