I listened to this podcast this morning, a wide-ranging interview with online collaboration specialist Nancy White. Listeners will most appreciate, I think, her observations on how to manage disruptive elements in communities. She was also asked about my own view of site-specific online communities (they have a boundary, she said, "this is my arms making a big 'O'"). Sometimes a sense of place and common purpose is needed. But there is a difference between inviting me to some place and having me create a whole new identity, between having me contribute to this specific discussion and having me use writing tools and a writing environment that are new and unfamiliar and don't give me access to my own resources and data.