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.

Absolutely agree! Consistent, well-timed touchpoints are crucial—especially in the initial stages. It's like planting seeds; you have to water them regularly if you want them to grow. Repetition not only strengthens memory but also trust and familiarity. How do you balance frequency without overwhelming your audience?