A Deep Dive Into The Anatomy Of Premature Scaling with a great infographic
startupgenome.cc
startupgenome.cc
They were focused on "prematurely scaling" their customer acquisition and profitability (ie. when thinking about a customer acquisition or engagement strategy they would be too focused on whether it would work when they had a million users).
Once PG told them to do things that don't scale, they started going out to NY to meet their customers in person, throw parties and the like and learned a whole lot of invaluable information in the process.