Dropbox now offers the ability to share files with friends in Facebook groups. Now, by linking your Facebook and Dropbox accounts, a new option to pluck files directly from your cloud storage will appear when you create new posts on a group's wall. The files will remain hosted on your Dropbox folder, which should make keeping track of any updates a bit easier. Last month Vimeo turned to Dropbox to integrate seamless file uploads, adding another feather to service's collaboration-cap. More importantly, these new features could prove to be a shot across the bow at services like Google Drive. Group sharing launches today, and users should see it arrive on their Dropbox and Facebook accounts soon.