By Marco Arment
The opinions expressed are his own.
Breaking news: a huge advertising company would like you to give them as much of your personal information as possible and encourages you to use their services more frequently, for more reasons, and for longer durations each time so they can show you more ads and make more money from the advertisers.
I like Dave Winer’s take.
It’s not difficult for a company of Google’s size to make a social network. The challenge is getting enough people to use it, and quickly enough, that the early adopters will stick around after the first few days and start habitually using it.
This is an extremely high barrier to entry, even for Google. As with most social phenomena, social-network success tends to happen more organically and unpredictably than anyone is able to artificially create by throwing money at it.
Successful social services at this scale also need constant attention, rapid improvements, and nearly flawless product direction — skills that Google hasn’t been able to consistently deliver to many of their products.
The network effect is extremely high in social networks. It’s absolutely a boil-the-ocean problem. For Google+ to be useful to you, most of your “friends” (in some context) need to be using it on a regular basis. And most people won’t use more than one social network regularly.