Hi Harold
When I apply the "Discontinuity Tool" from the Chasm model, their analysis of the contrast between pain and gain rearranges your top row: "Simulations". It seems to me the technologists/Innovators came up with RSS/Atom feeds, feed reader, and feed publisher apps. They experienced the most pain in getting those technologies to function reliably, yet gained the most impact over email, static web pages and threaded discussion lists. The visionaries/Early Adopter, like us, then saw the potential for sharing bookmarks, photos, writings, slides, videos etc. with subscribers to their/our feeds. Sharing was far less painful than developing RSS technologies, yet very disruptive to "ink on paper" paid subscription models (and almost as big an impact).

The pragmatists/Early Majority/bowling alley adopted microblogging online, within Facebook, and/or on their cellphones. Tweeting uses feeds and sharing, but is far less painful than creating a blog post like you've done here with gorgeous graphics and the table insert that took lots of thought to produce. I'd argue that the gain from tweeting is less than from blogging, since it requires less thought and gets shorter comments. Yet Twitter has now gone from the bowling alley to the tornado, where the Late Majority has created a whirlwind of expanding uses. I can now follow twitter accounts from my local library, the sports anchor on the local TV news and the grocery store I frequent. I can update my LinkedIn account by putting #In in the subject line and send my newest delicious bookmark as a tweet with an automatic URL shortener. Microblogging is becoming commoditized, taken for granted and unquestionable where creating RSS feed apps and blogging remain arduous, big commitments and exceptional.