Protonmail is nice. I considered including it but I thought since most want the free version 500MB wouldn’t be enough, nor would they see value in the “password workaround” when sending to non-PGP addresses.

If you don’t need your own domain Fastmail is only $3/month (and 2GB). Obviously, ads free otherwise it wouldn’t have made it here.

DDG... the name apparently just came during a walk, and without any particular reason. The founder liked it and stuck with it. Unless you have specific longtail queries it is absolutely usable and does not constantly give you Quora as top result because you clicked three Quora links in recent weeks. For the longtail queries, use !bangs. DDG isn’t that good yet at those but with the !bangs you can query the site’s own search engine. Even !steem is available.