Our read: build a CPM early-warning board for your pop sources
CPM swings eat margin silently. Get ahead of them:
— Log win-rate and effective CPM hourly per geo into one sheet. The number you watch is the SPREAD, not the level.
— A win-rate climbing while CPM holds = competitors leaving, lean in.
— CPM jumping with flat win-rate = a big buyer entered your zones, pull back or move geo.
— Tag known events (holidays, ad-network outages, competitor launches) so you read the swing, not panic.
— Set an alert at +20% CPM week-over-week per geo; that's a structural shift, not noise.
— confidence: medium
Pop Wire
@pop_wire