Pendragon Variety has been going strong, and I've done readings for it and some of my prose has appeared on there. I enjoy participating in the discussions and working the technical side of getting the episodes released.
I've been listening to Escape Pod and the Drabblecast regularly -- and I've even appeared in two episodes of the Drabblecast! (1,2) I love frequenting their forum, too.
Unfortunately Dear Editor has been on hold all summer, but we hope to start it up with a new format next month!