In a multi-user online real-time network in which users access content associated with a plurality of social networks related by common communities of interest, an interactor client application is embedded in content pages accessed by a user, and the user is provided a list of other users and the content pages in the related social networks that they are accessing. The step of punching the commutator forming plate is carried out using a first punch having a plurality of recesses corresponding to the projections. The controller device includes an operation unit, a generating unit, and a communication unit. In addition, a device capabilities database and an incentive database can be used by the server system to facilitate operations and encourage participation by client systems. An error is calculated for each candidate vector. The network page includes a content notification component in a visible portion, and the content notification component is visible in a viewport.