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Facebook is not an unstoppable juggernaut. There are a lot of other things people can do on the web.

Facebook has never been merely a social platform. Rather, it exploits our social interactions the way a Tupperware party does. Facebook does not exist to help us make friends, but to turn our network of connections, brand preferences and activities over time - our 'social graphs' - into money for others.

Facebook's data trove is enviable, and its moves into nearly every aspect of our lives - from payment to media, will create even more of it. The company also has created a huge base of developers for its platform, but the ecosystem is incomplete compared to vertically integrated OSes like iOS, Mac or Windows.

I use Facebook quite a lot to keep up with my friends, although I had to delete 'Words With Friends' from my phone because it was wasting too much of my time.

More and more, the things we do in real life will end up as Facebook posts. And while we may be consoled by the fact that most of this stuff is being posted just to our friends, it only takes one friend to share that information with his or her friends to start a viral chain.

I didn't know what Facebook was, and now that I do know what it is, I have to say, it sounds like a huge waste of time.

The people you're friends with on Facebook or the people you follow on Twitter are trusted sources of information.