+1 to the request for being able to whitelist localstorage per domain name, this is really essential for HTML5 web apps,
the simplest implementation (user interface wise) would be to just merge the functionality of whitelisting cookies, with that of localstorage.
so if the user whitelists cookies for a domain, it would also whitelist localstorage for that domain, after all localstorage is kind of like a "super cookie"