well i dont know but there are two important things i can add to this:
1) every once in a blue moon i get the "NS is getting more badass" page for a second, then try again and it works fine, leading me to believe it sometimes for whatever reason gets shown even though no work is being done and the site isnt down
2) there are tons of things they could change that you might not necessarily notice, like coding to make things load faster or whatever (not a coding whiz here but you get the idea)