Today, Simplenote will be working in read-only mode for about an hour, which means syncing won’t work during that period. Then, over the next week, you might find that syncing isn’t quite as fast as usual. And lastly, exactly a week from today, there will be one more scheduled maintenance period.
This maintenance is the result of work that Google is doing inside their datacenters to make services like Simplenote even faster. This is good news. It allows us to keep growing without any problems.
We’re sorry for the inconvenience.
Simplenote 
Maybe I’m just (un)lucky, but syncing between Simplenote and Notational Velocity seems to be broken this morning.