Whitelist vs blacklist: two ways to clean traffic

Whitelist vs blacklist: two ways to clean traffic

Today: every push source sends traffic from many small sites, each with a "source ID" (a number naming where clicks came from). You shape quality two ways.

— A blacklist blocks the bad source IDs after you spot them. You start open, then remove what wastes money.
— A whitelist allows only the good source IDs you already trust. You start closed, then add proven winners.

Which first?
— Begin with a blacklist. You need to run wide first to discover which sources are good and bad.
— Graduate to a whitelist later, rebuilt from your own winners, to scale safely.

Think of it as weeding a garden, then later replanting only the flowers that bloomed.

Try this: find where your report lists results by source ID. That list is your future blacklist.