How many curtain poles per metre/foot of rod

[onesandwichshort]

That's it really - I've tried googling, but get answers ranging from 8-16 per metre and don't know who to believe. Or does it not really matter that much?

do you mean hooks?

3 to 4 inches apart is usual, depends a bit on how thick the curtain is. Too many and they bunch up/don't draw properly, too few and the curtain sags.