Downdetector is nice because it answers my question of "is anyone else having issues with this?" When it takes AWS an hour to even acknowledge "increased error rates", and tells me that everything is a-ok in the meantime, I want another perspective.
Twitter's search used to be my go-to for this - a search for "AWS down" would typically be very illuminating - but it's tough to get it to genuinely spit out the most recent tweets with a keyword these days.
