If you've ever had to defend your knitting in public, if you've ever had to explain why you enjoy crochet or spinning, now you can refer to the fact that ONE MILLION people worldwide are members of this crafting community.
I joined Ravelry when it was still necessary to wait for an invitation. I was a little hesitant to do so since I didn't use other social networks (still don't) and wasn't sure of the benefit. Well, there hasn't been a day that I've regretted my decision. The sheer volume of resources available makes it worth it, even if you never post a comment or make a friend. Being able to research a pattern, a yarn, or read someone's notes on a project while sitting at home (even in pajamas!) is invaluable. Making friends, seeing what's new, getting advice or help or being able to find that one skein or partial skein that you need to finish a project can't be beat.
Ravelry is a part of my day. I don't know how many times I've learned something completely unrelated to knitting. I've joined groups that talk about audio books, Mac computers, and running. There are people from all walks of life here who have a common interest in fibery pursuits but who also are willing to share expertise in other areas.
No wonder when there's charity work to be done, money to be raised, or encouragement to be given, knitters step up. We're everywhere and involved in everything. Maybe now when the next major event is being organized (Sock Summit '11?) and the IT people are told to make accommodations for thousand of people to hit the servers at once, they'll listen.