Steph posted about the problems they were having with server issues and it was a last minute decision she made based on some feedback she received from me and a couple of other merchants. See this thread.
http://forums.monstersmallbusiness.com/ind...indpost&p=93214It is an inconvenience and the communication was lacking to be sure, but they found themselves between a rock and hard place with this and decided to move you immediately instead of delaying until tonight when traffic is lighter, but watching your sites go up and down all day. The action that they are taking now with little to no notice will be better for your store in the long term. I know that is probably not so comforting.
If you are one of the sites affected, you should pause any ppc campaigns that you currently have active. The server changes should take 15 mins to 2 hours.