Acquired by Microsoft in late 1997, Hotmail is still the largest Webmail service worldwide--but of late it has been losing marketshare, while Google's Gmail has enjoyed percentage growth in the double digits. Hotmail went through countless UI changes over the years, but it never quite seemed to be a priority for Microsoft. In the summer of 2012, Microsoft replaced it with a new free email account, Outlook.com, promising a cleaner look that's better suited to tablets and smartphones. Can Outlook.com wrest email users away from Gmail? That's the plan.