Birthday Alarm was a very simple site based on being reminded of your friends' birthdays.

I don't have any great ambition to go out and make money. But I am still fascinated in starting up businesses and starting it in a way and running in a way that I want to do it.

If you are going truly viral, you don't need press. I mean, MySpace grew for a very long time without any press.

I built websites for myself. I didn't want to work for anyone else. I came from a science background, so I approached things fairly analytically.

Myspace was always a bit edgy. People identified it with edginess and music.

Birthday Alarm was a very simple site based on being reminded of your friends' birthdays.

People can live without a Facebook account: my 13-year-old daughter has cancelled her account because it's not cool anymore.