The UI and behavior is amazingly close to the real thing. But I cannot help but sigh when the brush tool lags more than Paint lagged on a 233 MHz Celeron. I really think this is an awesome project, but I am old enough (30) to remember fast performing GUI apps and I don't know if I'll ever "get over" losing them. edit: hopefully it is an inefficient implementation and not the inherent slowness of web apps.
I remember the 90s. A windows upgrade took 2-7 days to complete, a large file could take 10-30 seconds to save, opening and quitting apps was on the order of 10+ seconds optimistically. Everything crashed all the time. This was the default behavior of a brand new $3,000+ machine.
No, thanks. :-P