I've been using DDG for some months now while at work. It's set as the default search engine in Chrome and Firefox. Generally get's me what I'm looking for fairly quick. The mouseover effect is a bit much (reminds me of a cheap SEO site), but the results are quick, I get good results, and I like icons and other little touches.<p>I really don't notice I use DDG anymore. Which is a good thing. Proof that even in a market where there is a winner, you can still put out a product.