I don't even use Twitter, but I did search it to see if I could find the downtime announcement (and maybe an ETA). I think this is a much needed idea, be it a twitter account or just a short blog that you could redirect to to let people know what's going on and when to expect the site to return! I know Snapzu prides itself on transparency, and I think this is an aspect of the website in which that transparency could be improved!

Edit: A page of release notes detailing exactly what changed during the downtime would be pretty helpful too!