8. The system of claim 6 further comprising means for providing, to each of the usability experts, the description of the event.
6. A system for creating a session log for studying usability of one or more computing devices used for social networking, the system comprising: means for receiving, from at least one usability expert, usability observations observed by the usability expert during a usability session for studying interaction support provided by one or more computing devices to a plurality of users interacting within a social network through the computing devices; means for recording the usability observations in a session log; means for detecting, on at least one of the computing devices, an event generated by the computing device as a result of an interaction among the plurality of users within the social network: means for notifying a usability engine of the event; and means for recording, by the usability engine, a description of the event in the session log, wherein each usability expert has a particular role in studying the interaction support provided by the computing devices and recording the usability observations in a session log further comprises filtering the usability observations in dependence upon the particular role of each usability expert, including determining whether an observation type of each of the usability observations is authorized for storage in the session log in dependence upon usability expert profiles.