Is Help 2.0 any different from Usenet 1.0?

This afternoon, I watched Scott Abel’s webinar What’s Next? Socially-Enabled User Assistance, Interactive Documentation, and Location-Aware Help. It was a tour de force tour of the past, present, and potential future of computer mediated help. But despite all the cool stuff that Scott covered — and he covered a lot of cool stuff — I found myself asking this: how is Help 2.0 different from Usenet 1.0?