Today Facebook begins rolling out file sharing to all Groups, and while it’s got many restrictions, it could be good enough to limit the long-term growth potential of cloud storage / file sharing services like Dropbox, iCloud, and Google Drive. Music and any copyright files aren’t allowed and file size is capped at 25mb, as Mashable first reported. But this is just the first version, and you can be sure Facebook will keep hacking away at it. Last month, the social network started letting users share files within Groups for Schools, but now we confirmed with Facebook that within a few days all Facebook users should have the option to upload and share files from the Groups post composer. Facebook users often talk about downloadable files, but now they’ll be able to share those Word docs, images, e-books, PDFs rather than having to upload them elsewhere. The addition of file sharing has been a long time coming, as Facebook CEO Mark Zuckerberg had previously worked on a peer-to-peer service called WireHog, which was shut down due to concerns about copyright infringement. It also comes after Facebook’s acquisition of New York City-based file sharing Drop.io in 2010, which brought Sam Lessin on board. File sharing could help Facebook fight its public image as a distraction from getting real work done. If you already have a Facebook Group to organize discussion about a class, work project, or vacation with friends, file sharing will fit right in. File sharing could help Facebook fight its public image as a distraction from getting real work done. If you already have a Facebook Group to organize discussion about a class, work project, or vacation with friends, file sharing will fit right in. Via TECHCRUNCH