Following up on Boring is Good, I think that the major barrier to use of these systems, whether collaboration or learning-oriented, is the “walled garden” framework. If I have “to go” somewhere, then that’s a barrier to use. E-mail comes to me, so it’s easy. Personally, I prefer using my feed aggregator to follow people and news. I use my blog and then perhaps Facebook to write once and publish to many. I find these tools EASIER than e-mail, but I’ve been using them for a long t...