Who is of greater importance? (Score 2, Interesting)

Dear Mr. Szulik,

Since it is impossible to please everyone all the time, how would you rank the following groups in terms of importance? When I say 'importance' I mean expending effort to understand the needs of and attempting satisify.

(a) Your customers
(b) Your shareholders
(c) Your employees
(d) Open source community

Thank you.