Management of online communication groups for communication systems

In one example embodiment, a communication group for a communication space is determined from among a plurality of communication groups of a communication system based on comparisons of a plurality of attributes of the communication space to corresponding attributes and content of the plurality of communication groups. The communication space includes communication sessions between members and the plurality of communication groups include one or more from a group of communication spaces and communication threads. The communication space is placed within the communication group on the communication system.