I think about spaced repetition forgetting curves for marketing/branding absolutely all of the time. 

Did you just launch? You need to get in front of people again at 2, 7, 30 and 60 days later if you don't want to be forgotten. 

This is the stuff brands are built on.

Where do 2,7,30,60 come from? Are those random or is there a secret knowledge that I don't know about?

Building and publishing Farcaster growth playbooks. Chief builder @percs.

imo it's like numeric expression of "a few days", "a week", "a month" and for some reason "a few months"