It's been working for me every time I've tried it in recent memory, but I may not use it as much as some of you.

In any case we're performing maintenance on the site and it's expected to be down or only available off and on for a while this evening. As it's still in beta we can't guarantee uptime or scheduled/announced maintenance. It's still in testing so there may be times where there's a problem and the site isn't working, or we're in the process of working on it. There's been some recent updates so I think once it does come back up there will be some new features everyone can check out and help test.