My biggest problem with DDG is that it is so English-centric. I know they have those "regions", but the results from them are much worse than from US region and a need to switch them via settings page every time I change the search language is an unacceptable hassle.
I do, like, 40% of searches in my language, so it is still a lot of work. Anyway, language recognition is actually pretty easy nowadays, especially with the amount of data DDG has from crawling -- if they care about foreigners of course.
