Although, in the general mass, the public took the social network from Apple pretty cool, there were a lot of people who wanted to use the ping service - the first million users were registered in the first 48 hours.
Ping - this is an additional feature of the player iTunes, allowing users to "flock" according to their musical preferences. It is possible to exchange comments, share your musical preferences with the world, and just chat. And although there has been a trend in the world to reduce the popularity of social networks, they are still quite attractive for developers. Couldn't resist this temptation Apple.
However, most likely, the vast majority of those who registered did so under the influence of momentary curiosity. According to official statistics provided by Apple, every third user who installed iTunes 10 signed up for the service. If this continues for a few more days, then Ping will become one of the ten largest social networks around the world. In total, there are about 160 million users in the world iTunes.
Incidentally, it was noted in Ping already and a lot of spammers. Where would be without them.