Services that explicitly needed the API were also down, and it wasn't pretty. For example: Minecraft Mod packs that rely on SerializationIsBad all went kerplunk! I'm sure a lot of people were scratching their heads yesterday wondering why they couldn't do anything for a time.

What made me laugh though was when the "X is functioning normally" immediately followed by "X is degraded, continuing to monitor" messages that kept popping up then right back to "normal" again, all in the same 30 second timespan... made me giggle