[djbusby]

And it's crypto is "very good" (so I've heard, not an expert)

And it's fast/low overhead.

And yea, surprisingly easy, "just works"

I lurk their maillist, seems a nice group.

[tptacek]

It is very good, it is objectively better in a lot of ways than legacy DNS protocols. But it's popularity is, I think, mostly because of ease-of-use.