The strategy of these firms is probably to launch a series of apps that run the spectrum of popularity, from thousands to millions of users. Banning the big one

The strategy of these firms is probably to launch a series of apps that run the spectrum of popularity, from thousands to millions of users. Banning the big ones puts a dent in the problem, but a company could have released 50 apps with 10,000 users each that sucked down profiles of 1 million people each (via calls to friends' data). My guess is that each of those would not qualify as "large" by Facebook standards.