"What can you really learn from this mail?" It makes (some) people feel good by "validating" closely held beliefs ;-) Seriously though, you are right. There i

"What can you really learn from this mail?" It makes (some) people feel good by "validating" closely held beliefs ;-) Seriously though, you are right. There is no specific data of any kind on the application/company/customers etc. Without data, this is hardly a "case study". (The Bingo Card Creator addition of MixPanel - http://www.bingocardcreator.com/articles/tracking-with-mixpanel.htm http://www.bingocardcreator.com/articles/tracking-with-mixpa... - is a much better "case study" of a subset of the "Customer Discovery" Idea , especially if there is a follow up). Comparitively, the referenced post in the google group is very lightweight, with no concrete insights or data. You'll see many such "experiences" in lists devoted to specific methodologies (agile/lean/scrum etc) Sounds like a "testimonial" invented by a marketing person (not saying this isn't true, just that there is no data and the post is very content lite, and so practically valueless)