Facebook is rolling out with the ability to share files among groups. They revealed the information in an exclusive interview with Mashable. They event included a picture of what the feature will look like.

Only a few groups will have the ability to to file-share on Thursday’s roll out date, but everyone will be incorporated in the days that follow.

Users will have the ability to upload most file types up to 25 MB. Exceptions will be music files and executable files. E-books, comics, and video files are fine up to 25MB. Facebook seems to be trying to avoid being associated with any nefarious activity like piracy or hacking by eliminating .exe and music files, while keeping file size down to eliminate copyrighted video.

They are also including the ability to flag malicious or copyrighted files, making it less pirate and hacker friendly. If someone were interested in that kind of activity there are a lot more sites out there to accomplish such things, but I’m sure there are going to be more than a few spammers or bots out their waiting to troll people’s groups.

Mashable speculated that Facebook will use its recent acquisition of the file sharing service Drop.io to add a conference calling service to groups. I guess we’re going to have to wait and see on that one.