The thing about hanging out on international sites like Ravelry is that you get to hear about all the fantastic yarns of the world. You try some of these wonderful international yarns, for example Cascade 220, and you realise what all the fuss is about. This is compounded somewhat when you come across 5 knots in a ball of Rowan (by the way i found a knot in the second ball as well, 6 knots total).
So you're buying all this wonderful yarn and then...what happens when you find an amazing yarn that you just can't get at home, no matter how hard you scour the internet? Worse, a whole range of yarns and the only website who deals in it won't, not can't, won't ship to your country? Knit Picks range of yarn is one such example. But yay! I've found a UK supplier. A UK supplier of Knit Picks Yarn.
So if you've ever hankered after a go of some Knit Picks yarn, now is your chance. Good on ya GBY!