In addition to determining the size of the community, it is also
necessary to choose an appropriate system of interaction. Under some
conditions, face-to-face meetings cannot be relied upon, such as in the case
of geographically distant and distributed communities of practice where
knowledge problems and issues are common but sharing documents,
procedures or experiences over long distances is more difficult. The distance
problem can be resolved, in part, through use of interactive information and
communication technologies such as videoconferences, teleconference calls,
teleconferences on web sites, e-mails and forums but such interactive systems
must be carefully designed.