Yahoo Box! has reached 1 million users since its launch in October, that's just three months ago.
The service is similar to Dropbox, and other Web-based storage services, and Yahoo Japan ID users are given of space 5GB for free. Those Japanese Internet users that hold a premium Yahoo Japan account — which costs 295 yen ($3.80) per month and enables a series of services including auctions – are entitled to ten times the space of regular customers, and they receive 50GB without charge.
It is particularly impressive that more than half of the users (51 percent) are paying customers,