@coda @x0rz @switchingsocial My two cents:
When I worked in marketing, the 3 big reasons people didn't use a product were 1) just plain had never heard of it, 2) there was a value-perception issue or 3) there was a technical hurdle that made adoption an issue.
#1 is most-quickly solved by $ (ads) and most-economically solved by human effort (manual promotions). #2 is solved by identifying and resolving the end-user doubts or mistrust. #3 is the tech version of #2's emotional issue, and resolves when the tech issue is fixed.