mseobel - not that I know first hand cause I still have 3508 in front of me :pout:, (but that's down from like some huge number!:cheering:) - but from what I can gather, its knitting community with great access to patterns and what others have done with them. That's my interest in it at least - I'm sure there is lots more to it. I'll leave that to those who actually know though!
And there is a line because of the way they set up the website, it is still new and small, and can only handle so many people at a time.
Not much help, but it's a start.