And, if we look at the list of people who were writing it, we see Github, Meteor, Reddit, and StackExchange people (plus JGM and Atwood) as the participants, wh

And, if we look at the list of people who were writing it, we see Github, Meteor, Reddit, and StackExchange people (plus JGM and Atwood) as the participants, which I think cover the top 3 sites using Markdown. And Jeff is using Markdown for his forum project, Discourse, so that's another chunk of users. This kind of coalition has the power of numbers to standardize on something, which is why this is so exciting.