Skype has a great engineering team, which I like to describe as 'all of Estonia.'

A very large percentage of economic activity is shifting online and it makes sense that there are more services that are going to charge. It also means there are going to be more people willing to pay.

Whatever you're selling, storage or networking or security, you're going head to head with the incumbent players.

I don't waste time being depressed.

The 2 hardest things you'll have to do when running a company are recruiting and talking people out of leaving.

We call it the 'Rule of Crappy People'. Bad managers hire very, very bad employees, because they're threatened by anybody who is anywhere near as good as they are.

The advantage of the consumer businesses is they tend to be much broader-based, much larger number of customers, that tend to over time be a lot more predictable. The advantage of the enterprise companies is they are not as subject to consumer trend, fad, behavior.