I agree. NetHack has heritage (and nerd-cred) going for it--but in terms of raw playability, DCSS has it beat, hands-down. Crawl might also be the most active modern roguelike in terms of development (a rotating cast of a dozen+ active developers working consistently over several years), whereas, to my knowledge, all the modern NetHack forks are the works of lone developers.
For players new to roguelikes, I'd also have to recommend DoomRL (http://doom.chaosforge.org/) as a fantastic game, and its shorter length might appeal to more casual players.
"Eating your own dogfood" is nice and all, but why do we expect the top executives of a massive organization to actively participate and dictate every aspect of every facet of the company? That's the point of delegation; Google+'s lead developer _does_ use Google+, and that's what's most important.
Is anyone else baffled as to why people seem to care about this? For a parallel, what's Bill Gates' gamerscore? Does he even have an Xbox Live account? (If he does, please mention it.) For that matter, how often does the CEO of Johnson & Johnson douche himself? These are, apparently, the facts that matter.
Mandatory disclaimer: I have a Google+ account, but I've never once posted anything (I just wanted my name to appear in the header bar on my Google pages (yes, I'm vain)).
So long, John.
What a depressing month. :(