I would only hire someone to work directly for me if I was willing to work for that person.

I generally think if you do good things for people in the world, that comes back and you benefit from it over time.

Berlin definitely has one of the most vibrant of the startup scenes that I have seen. Not really just across Europe, but across the whole world in terms of cities. It's an interesting dynamic.

Our strategy is very horizontal. We're trying to build a social layer for everything. Basically we're trying to make it so that every app everywhere can be social whether it's on the web, or mobile, or other devices.

If you just work on stuff that you like and you're passionate about, you don't have to have a master plan with how things will play out.

There are people who are really good managers, people who can manage a big organization, and then there are people who are very analytic or focused on strategy. Those two types don't usually tend to be in the same person. I would put myself much more in the latter camp.

I think that the tax situation needs to be worked out between the countries themselves.