They do log the queries, as google does. You can only trust a search engine when they do stop logging.
Any NSL can order them to hand over the logs in certain regimes (bulk or per IP? We know what happened), but they cannot force them to write logs in the first hand. Without logging it will also be ~10% faster.
DDG does not log queries in the same way Google does, they are far more generalized, even so, even if a company say they don't log use, or limit logging, it still does not mean they can be completely trusted. If you are doing something electronically, more than likely, you can be tracked.
> If you are doing something electronically, more than likely, you can be tracked.
That doesn't really encapsulate the range, sure if I'm logging into facebook from my home connection off a stock linux desktop then that's way more trackable than Tails off a memory stick in a laptop with no hard drive using the wifi of the McDonalds across the street from Starbucks.
The issue is that the bar for anonymity online gets pushed higher and higher.
Any NSL can order them to hand over the logs in certain regimes (bulk or per IP? We know what happened), but they cannot force them to write logs in the first hand. Without logging it will also be ~10% faster.