So does not work in Firefox at all (I mean even the — almost trivial — form does not display, not just the preview), slow as hell to load (even with basically no content), seconds of FOUC for the form (of which all fields but one disappear), and the preview... let's just say it doesn't quite spell out what the product is supposed to be (a cloud/in-browser development and code management thingie with some facebooky wankery on top.

Complete with stuttery transitions and weird styling flashes in Safari.

Got to say, if that's the hook I'm not exactly hopeful.