I'm guessing you're in New Zealand or Australia? Well i live in NZ, and as far as i know, the only time you'll ever see badminton on sky is during commonwealth or olympic games. It's quite anoying not being able to watch international games all the way over here to learn new things. But i'm sure they'll eventually show something.
No, I live in the UK. It's frustrating, then again BBC 2 had some highlights (1hr for the whole world championship i think).
I am in NZ too, this kinda sux that sky dont do Badminton. What if we write them a letter a day? would that be any help?