Duck Duck Go privates?
As a matter of course I have one "normal" Firefox instance, to pick up my passwords automatically, for personal stuffs, ElReg, editing Wikipedia, that kind of thing. Anything else I do, especially work related in my personal laptop, happens in "incognito" windows.
Lately I am noticing that Duck Duck Go seems to be serving me local results, and some to be "topic related" to previous searches, in OTHER incognito windows, or previous days... So, at the very least, not only "what words I type", but IP address geoloc, with some kind of "history" tracking for my IP address? Haven't gotten paranoid enough to actually design and perform some kind of testing. Just a nagging feeling for now. And a hmm...