Also Instant search is great when I'm searching for an API method or something really specific.
But form time to time I'm looking for an epiphany search: something focus on programming, close enough to get some inspirations in order to refine my search query a few times : then I find the perfect query.
My feeling is google enable this kind of exploration/iterative searching : not DDG :-(
Saying that I truly want to stick to DDG... and Instant search is not the feature that I need.
So a "dream feature" would be to search only a subset of your index : between 9.AM until 7P.M I only want answers from tech blogs, stackoverflow, stack exhange etc... A kind of "search profile". Is it possible ?