The service is now in 28 markets around the world, and in March the company said it had 24 million active users, a quarter of them paying customers.
Mint, which tracks users' financial accounts and creates budgets, has 630,000 registered users, a quarter of whom have joined since the fall.
Foursquare, for example, which lets people "check in" to public places on their phones and let their friends know where they are, has close to three million users, most of them in cities. Loopt, a similar service, has four million users, about a quarter of whom actively use it.
By 2007, it had reached eighteen million users, roughly a quarter of Iran's population.
Boxee CEO Avner Ronen says that the service has 2 million cumulative users, around a quarter of whom are active.
Today, Facebook's staff of more than 18,000 serves over 1.8 billion monthly users — about a quarter of the world's population.
That's over 25 million users, or a quarter of the entire mobile Internet population of the country.
In India it is used by twenty-five millior users, or a quarter of the entire mobile Internet population of the country.
On the plus side, Bebo does claim 25 million users, about a quarter of what MySpace has today.
According to the data released by the Sina Microblog (Weibo) Data Centre, as of Dec. 2016 (Sina, [31]), SM had 297 million active microblog users, almost a quarter of China population.
The trends are especially troubling, as the region is home to 3.7 million injecting drug users – almost a quarter of the world total.
