On Yudum.NET, groups are the corners where people keen on the same subject gather: a film group, archaeology enthusiasts, the supporters of a team... When you start a group you get not only a page but also a chat channel tied to the group (#grup-name) and the possibility of sending announcements to its members.
Starting a group is open to members and takes two minutes. In the group you founded you approve the applications, write the announcements and, if you want, appoint administrators.