There's no current Bug Report thread, but I just thought I'd let y'all know that the tagging system is working locally, but down globally. That is, io9.com/tag/books works, but kinja.com/tag/books doesn't. This means the Back Deck is down, along with any other globally tagged communities.
ETA: It's back up now (11:40 am EDT)
and down again 11:43am