What does it actually mean these days?

It started as "independent", a term to describe groups that were unsigned. From there it got looser to describe new/obscure groups (even if they were on a label). The "indie" scene grew into an exclusive club of hipsters that appreciated all things ironic.

These days, the "indie" scene is mainstream (which is ironic in itself) and groups like Fleet Foxes and Grizzly Bear are given labels like "indie-folk". Can somebody explain what makes them "indie"? They don't get a lot of radio play (but they are both pretty popular regardless). Is their music ironic (seems to come from a genuine enough place to me)? Do they not value musicianship/quality of singing (seems like they do)? Mumford and Sons make radio oriented folk, but these days, even they are also lumped in with "indie-folk".

I used to think that the "indie" label was given to groups when Pitchfork (the eye of the indie storm) gave them a favorable review, regardless of the strengths or weaknesses of the music itself, but that no longer applies. Now it just seems like a convenient label today's music snobs (the OG "indie" people?) use to dismiss new music. The term means everything and nothing.