The pages look more like blogs than a social-networking site. A large photo covers the top of the pages, stretching from one side of the screen to the other. And posts -- like photos, status updates and the locations a person visits -- show up below that, attached to a vertical and chronological timeline.  Facebook is hoping the changes encourage people to publish more information about their daily lives and about their pasts. In his onstage demonstration, Zuckerberg posted a baby picture of himself, which showed up at the bottom of his timeline profile.  "We think it's an important next step to help you tell the story of your life," he said.  Some users got a beta version starting on Thursday, while others will be able to request access. The new profile will be turned on for everyone in the next few months, according to Bret Taylor, Facebook's technology chief.  The world's largest social network, with more than 750 million users, introduced some related new features earlier this week. Zuckerberg said Facebook's reach continues to grow.  "For the first time ever, in a single day we had half a billion people use Facebook," he said.  The company made a second big announcement Thursday when it unveiled a new version of its app network, which also is launching in the coming weeks.  Facebook will make it easier for people to post info to their profile pages without visiting the site or clicking a Like button. The company has partnered with dozens of prominent software developers for applications that integrate more closely with the social network. Some of these features launched on Thursday.  This is "the most significant change we've made to our platform since we launched it four years ago," Taylor said.
Facebook wants to hear your life story.Not satisfied with just being a repository for recent vacation photos, the company is revamping the profile pages on its website to better highlight the