[megri]

Facebook, which turned six Feb. 4 and has more than 400 million users, improved its search engine and made several navigational changes to its homepage. The search bar, currently to the right for the majority of the site's users, is being moved to the center of the page, sitting above the News Feed in the top menu. Users will see their newest notifications, requests and messages in the top menu. The changes, designed to improve the social network's usability, will roll out gradually to all users and could spark an outcry from people who have gotten comfortable since the company's last major homepage change in October 2009.

Facebook Feb. 4 celebrated its sixth birthday in style, revamping its search engine and making several navigational changes to its valuable homepage.

The changes, designed to improve the social network's usability, will roll out gradually to all users and could spark an outcry from people who have gotten comfortable since the company's last major homepage change in October 2009.

The search bar, currently to the right for the majority of the site's users, is being moved to the center of the page, sitting above the News Feed in the top menu. When users type in friend names, the search bar will auto-complete names for people who are the closest to you them according to the people you share the most mutual friends with.