Re: New, simple online wallet: www.instawallet.org - no signup required
My only suggestion would be a "copy to clipboard" icon/link next to the funding address (I need to do that for ClearCoin, too-- haven't looked into how to do it yet, but github does it so I know it can be done...)
As far as I know, the only way to do this universally across browsers and operating systems is to use a flash object.
Clippy is what github uses: https://github.com/mojombo/clippy