Sterling Proffer

In its early days, Substack primarily catered to a certain set of internet-savvy writers and journalists, lured by the promise of monetizing a direct relationship with their readers. But as it morphs from a niche publishing concern into a heavyweight start-up mentioned in the same breath as Twitter and Facebook, its user base is proliferating... See more

On TikTok, new songs surge or flop based on how effectively they entice users to perform some slapdash feat: a simple dance, a costume change sourced from the bedroom closet, a cute or cringe confession. With a booming, young user base, TikTok has become a music-promotion ecosystem of extreme importance. That ecosystem thrives on calculated... See more

To understand your adjacent users, it is helpful to understand the attributes of who is successful today and why they are successful. The reason this is helpful is that your adjacent user is different on one or more of these attributes (but not all). These attributes create vectors of expansion.

I suggested that Substack’s day of reckoning may still lie ahead. The bigger Substack gets, the more ideologically diverse its author pool becomes, the greater the chances for highly inflammatory, potentially harmful content.