Just another data point but I use ddg exclusively because it's more flexible. Do I get the results I'm looking for? Great. Do I not? I just use to bang syntax to query somewhere else without having to change sites. It's more convenient than google for me to use, therefore better for my needs. I've been using ddg long enough now that I often refer to "searching the internet" as "ducking" rather than "googling" xD but I'm sure that's just because it makes me feel cool, rather than me naturally thinking about ddg before google, haha.