My superficial assessment suggests these guys, at the very least, know their shit better than instawallet guys did (no privkey exposure in the link).

Now, what concerns me most isn't key storage schedule per se (if I'm really paranoid about people running off with coins, I will store coins on a dedicated encrypted laptop in a "thin client". And the laptop will be locked up in a large metal box most of the time. ), but rather, what features beyond "hassle free" and "easy" are you going to implement ?

'cause I can like myself a strongly pseudonymous, online wallet that is sufficiently feature-rich...So come on, AMAZE ME.