Hi all,
I thought folks might be interested in these nifty websites:
http://www.banjohangout.org
http://www.fiddlehangout.org
They both host large and thriving communities of pickers, luthiers and enthusiasts.
Also, for those who are just getting started with bluegrass and old time picking, the Abbot family has a very nice method for learning to play by ear and play in any key. I recommend checking it out:
http://www.playingbyear.com
Best wishes, Jessica