A number of people have mentioned over the last week or so that they’re seeing a lot of outages, failures and general ickiness with SNDS. I contacted Microsoft and asked about it. SNDS has been undergoing some upgrades and improvements and the outages were not intended to be end user visible. They’re going to keep a closer eye on things, while they finish the upgrades.
The good news in all of this is that SNDS is being upgraded and maintained. SNDS is still a functioning part of the Microsoft infrastructure, and this is good news for anyone who uses it as a data source.