Some HR departments have been known to have a quick look through face-book, t w i t t e r (bl00dy autocorrect!
) etc as part of their "shortlisting for interview" process. Be careful what you write/post under your real name - not just to this face-book group but on your own pages as well.
Good job its anonymous (sort of) on PPRuNe .....
Edited to add - love the acronym!!