EEEEKKK, no...

Never ever, my main machine cost me nigh on £900 and my older machine are priceless I wouldn't risk mucking their timing up or other possible damage, such as one breaking and flip up towards my eye, which has happened with a broken needle!

I either pin a good way away from the 1/4" or put them in horizontally so I can easily take them out as I get near them. Unless someone gives me a 100% reason why you your should sew over a pin I will carry on as I have been, I love my machines to much :?

never... ouch.. break and can flip in your eye.. oh dear.. good post.

I try to remove them as I go.

If I am piecing something together that has to be perfectly aligned then I will sew over them VERY slow. I use the very fine thin pins. Otherwise I will take them out as I go.

I have to own up and say I sometimes slow down; but keep the pins in at my intersections. Hopefully I don't cause some serious harm to my machine someday as a result because I will be really sad.
It pays to buy the finer pins if you are going to do it. You will like them also, because you don't feel them pop through the fabrics like those cheaper yellow ones (which I also still own and use for other things). Those cheaper ones are great for pinning layers when sewing binding on because they don't bend so easy.

No!

Not if I can help it :lol:

Ditto

NEVER NEVER NEVER!!! It can ruin the timing of the newer machines and at the very least nick your needle and cause poor stitches. I rarely use pins when quilting, would rather use the "braille" method.