I think philosophy is very useful and I am very interested in the subject. That does not necessarily mean I will pursue a major in it. I think of philosophy as more of a side-interest. It is a key to unlocking true happiness in your life.
I do not foresee any instance where such a major will come to be in demand, since the world is continuously run by more and more corrupt ideals as a "compromise" (e.g. politics). Some jobs off the top of my head:
-think tanks and other non-profit research groups
-teaching jobs
-writing books (this is where the $$$ is)
-starting a website like this guy did:
Freedomain Radio - Home
He has no job other than what he makes off donations from people who enjoy his philosophy podcasts and articles.
-graduate school in psychology and become a psychologist (the 2 are very linked together in my opinion)
-therapist (is this the same as a psychologist? does it require any formal education or can you make money based on good references and hearsay?)
-grad school in mathematics (logic and proofs, anyone?)
-law school
-med school (probably an odd choice for a philosophy major)
-speechwriters (create concrete arguments for bigshots)