#8 Microsoft.com - 271.7 Million Unique Visitors

Microsoft.com is destination for purchasing Microsoft products, and downloading MS software and updates. There are a lot of Microsoft Windows-powered computers out there, and most of them come with Microsoft.com bookmarked for customer support and lots of other functions, no wonder it’s on this list.

#7 QQ.com - 284.1 Million Unique Visitors

QQ.com is China-based search engine and portal. QQ is an abbreviation of Tencent QQ, which provides customers with a popular instant messaging software service. Due to popularity of the instant messaging software service, by 10 September 2012, there were 784 million active user accounts with approximately 100 million online at a time.

#6 Live.com - 389.5 Million Unique Visitors

Live.com is Microsoft's new email service. It was a customizable portal launched by Microsoft in early November 2005 and it was one of the first Windows Live services to launch. Live.com lets users add RSS feeds in order to view news at a glance. Building off Microsoft's Start.com experimental page, Live.com could be customized with Gadgets, mini-applications that could serve almost any purpose.

Some gadgets integrated with other Windows Live services, including Hotmail, Live Search, and Favorites.

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