Generally web based wallet's main issue is the utmost security and there are many ways of stealing your password, user name and keyword even your 2FA access to your web based wallet, in this sense Bitamp has done a tremendous job by making this one where no need to store your such valuable but risky information. That's why it is very much potential to me.
Well, to be perfectly fair, our wallet simply means all that sensitive data stays on the client side, so you never send US anything. But any kind of web-based service is at risk IF the client's own device or browser is compromised -- but that said, we're all about convenience and ease of use for the newbie Bitcoin user, and using a browser means sacrificing that bit of security.