I would echo the comment on performance with your app and Bespin. I mainly use TextMate and Xcode and they both still have incredibly annoying delays when synta

I would echo the comment on performance with your app and Bespin. I mainly use TextMate and Xcode and they both still have incredibly annoying delays when syntax-coloring largish docs - and that's running native Obj-C/C on a 2.8GHz C2D desktop. So although I wish you luck and am hopeful that we will perhaps one day have a usable cloud-based IDE, still kind of doubtful that it can happen with current JS engines.