The internet makes human desires more easily attainable. In other words, it offers convenience. Convenience on the internet is basically achieved by two things: speed, and cognitive ease. If you study what the really big things on the internet are, you realize they are masters at making things fast and not making people think.
Here’s the formula if you want to build a billion-dollar internet company. Take a human desire, preferably one that has been around for a really long time. Identify that desire and use modern technology to take out steps.
Ev Williams (via Wired.com)