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.

Spaced repetition and forgetting curves are crucial for maintaining brand visibility and retention. Consistent exposure at key intervals is essential for brand building and preventing consumers from forgetting about your product or service