Facebook has acquired a startup called Divvyshot to create more ways for its 400 million users to share their photos online. Terms of the deal announced Friday weren't disclosed. Divvyshot, a year-old startup based in San Francisco, runs a service that makes it easier for more people to contribute to the same online photo album. More than 3 billion photos are already uploaded each month to Facebook, one of the Internet's most popular hangouts. Divvyshot said Friday that it is no longer accepting new accounts and will move all its existing users to Facebook within the next six weeks.