It was vacuous, basically an extended resume for the presenter, mixed with empty platitudes about principles for clojure evangelism. And worst of all in terms of wasting my time, it was misrepresented. It comes across in the blurb as a talk about the contexts in which Clojure has been useful to startups, and the presenter represents it this way in the introduction, when instead it's "here are these vague descriptions of how I effectively evangelised Clojure in each of these startup companies."