I'm sure it's amazing, although I could never bring myself to sign-in. It always seems too "click-baitey". Sort of like "we have the answer but you have to sign in to get it". So I've always just let them have their answer and gone elsewhere.
Reminds me of the old experts-exchange results that used to show up in google
I can imagine how Atwood&Spolsky would be taught in schools one thousand years from now: "...and they raised with their flaming keyboard and chanted in the language of lint: begone foul baiters, your days of kidnapping knowledge are at an end. And they conjured an aggregate of all the known programmig knowledge future, present and past, and thus the SEO monster was slaint."