A picture’s worth a thousand words, and now Facebook is letting others add to your conversation. The world’s largest social network announced shared photo albums on Monday, a new feature that allows multiple users to upload images to the same album. The album creator can share access to as many as 50 “contributors,” who can each in turn share up to 200 photos. Album creators can choose a setting that allows contributors to invite others to the album, or retain total control over album invitations. Previously, users could only upload photos to albums they created, and each album was limited to 1,000 total photos. The new shared albums have three available privacy settings: public, friends of contributors and contributors only.