Microsoft launched its new Metro-style webmail service Outlook.com two weeks ago, and it looks like users are switching over to the Hotmail replacement at a pretty steady clip. Alongside its complete SkyDrive revamp, the company has announced that over 10 million have signed up for the service. The last number we heard was a rather impressive one million users in 24 hours, and while that pace has dropped off a bit, it's still impressive growth. Of course, the stats may be thrown off just a bit by eager users claiming vanity email addresses before they're all snatched up — have you secured yours yet?