10 years is too far out for me to speculate. In 5 years, I'd like to see us have significant market share on desktop, mobile and tablet. To get there you'll see us focus on the things we've been focusing on, i.e. working with partners and our own indexes to deliver way more and better instant answers from a variety of sources; way less spam; real privacy; and a simpler UX.
That is exactly why I love DDG. I almost never get spam, but the fact that you want to make it even better is so awesome. Seriously, DDG's killer feature is a founder interacts with the users.
In other words, how much fun are you having, and how long is that going to last?
EDIT: A legitimate question, as Gabriel has cited fun as one of the perks of going DDG. How are people reading this as a negative comment/question? It was meant as a prompt to respond to the parent.
It's really both. To the extent that people are switching to us from Google, that is clearly competition and our goal is to get people to use us as their primary search engine. However, a lot of what we do is very complementary to people who have a general crawl.
