I'm only asking, because I believe I read somewhere that doing that is bad - I personally don't have a habit of doing it, I actually use my pinky a lot of the time when plucking away, but the reason I'm asking is:
You see there? Andy McKee is anchoring his pinky, and I've actually noticed in a lot of music videos or live shows he'll do that on certain songs and then on others he doesn't anchor, any particular reason you think? Is it a good to be able to do both? Anchor and not?
I don't know if anyone here can answer it, but it was a question I've been thinking about.
Edit: I also heard that doing so decreases speed? But look there! No speed lost.