Their ad revenue is based on reach, but
as advertisers realize how little reach is authentic, they are less willing to pay.
In the early days of the web, they broke the deadlock over pop - up ads, allowing users to directly shape their online experience, leading to the death of pop - ups
as advertisers realized that serving a pop - up was a guarantee that virtually no one would see your ad.
Not exact matches
In other words, people with mobile phones in search of free ringtones will act
as the distributed phone verification system to compensate for Craigslist's antispam initiative: a random voluntary population, organized remotely by machine, helping
advertisers to swamp the community platform without ever
realizing that they're doing it.