Steve, I don't believe you need to worry too much about concertina players like me horning in on your new accordion forum. As I mentioned above, both of our hands are generally too busy picking out the tunes to have much energy left for typing. Also, even though our squeezeboxes may be small, our minds are broad and we'd likely get bored rather quickly by endless accordion chatter. So carry on, good luck with it and all that. Write when your pinky fingers find work.
John, if you think you're a better player just because you use your pinky, Then you should buy a Mairtin O'Connor cd and try and play along.... He hardly ever uses his pinky.
That said, i use my pinky as much as the rest. I don't think i could do without it. And i think it's wrong to advice people not to use it.
Mairtin O'Connor plays concertina and never uses his pinky? I'm impressed - I didn't even know he played the concertina!
As for me, I play (sort of) the concertina, and I need to use my pinky - especially the left one, as hard as it might be. And I've never been advised by any concertina player anywhere that I shouldn't use it. But I don't play accordion myself, and therefore I would never deign to give any advice to an accordion player - except maybe to quit playing accordion. (But I'm kidding there, of course.) I do know though, from considerable hearsay, that lots of accordion players don't use their pinkies and that the use or non-use of that digit in accordion playing is a subject of some controversy, not unlike the tongue-or-no-tongue controversy in the flute/whistle community. Hence my comments about that lowliest yet most hardworking of the fingers...