I don't know if Matasano is a nice place to work at (well, friends there have been happy, so I guess I do have some information), but it sounds like a wonderful place to interview for. Enjoyable instead of actively painful and stress-inducing.

If someone doesn't make the cut, what does Matasano say? Do you say what didn't work out, or is it the industry standard and horribly antiseptic "we have decided not to move forward at this time"? I'd understand the latter, but if there's a place breaking that mold, I think it might be you guys.