I don't need every customer. I'm primarily in the business of selling a product for money. How much effort do I really want to devote to satisfying people who are unable or extremely unlikely to pay for anything?

As long as I manage investments properly and don't spend recklessly, Tumblr has given my family a strong safety net and given me the freedom to work on whatever I want. And that's exactly what I plan to do.

Instapaper wouldn't be of as much value if it weren't for these mobile and e-reader devices. They give you a separate physical context for reading.

If you sit on, sleep on, stare at, or touch something for more than an hour a day, spend whatever it takes to get the best.

Instapaper is much bigger today than I could have predicted in 2008, and it has simply grown far beyond what one person can do. To really shine, it needs a full-time staff of at least a few people.

People will pay for something they like because they want to ensure its future.

Google won't break into your home. You'll invite them in.