Comment by nedt
4 days ago
Before you target 5 different cohorts it's better to target the context of where the ad is shown. i.e. web content normally already has a category and people reading an article about cheap flats in a city might be very much interested in renting or buying a flat. By collecting signals on a user you might only get that interested after a longer time, if you even have a profile, and by the time you pick it up they might have a new flat and are no longer interested.
Yes definitely. User level targeting comes after targeting particular ad spaces in some ad platforms. But it still adds enough marginally to be useful.