"I have a bunch of single-use Gmail accounts for the usual things, like account registrations, site administration, newsletter subscriptions and the like. If you have this same situation, you know that (unless you possess unusual patience) it's not easy to serially open up multiple Gmail accounts if you have saved the login information for an auto-login. Oh, and forget trying to have multiple parallel Gmail accounts signed in, it's one-by-one or nothing. Well, until now, that is..."
