Recently, through his official account on twitter, the steemit announced that their system is experiencing interruption (down).
But there's no explanation in detail what kind of disturbance on it.
Steemit only recommends users temporarily to use third-party services, ie: busy.org, until their system is stable again.
Ofcourse, we hopefully that @ned can fix it as soon as possible, don't we? :)
Here's the tweet: