MageBridge makes use of a concept called "event forwarding" which allows you to pick-up an event generated in Joomla!, and replay that event in Magento. This way you can bridge things much more easily, while MageBridge provides the right architecture.
The JomSocial component is filled with events, but unfortunately few of these events are useful for usage with MageBridge. For instance, there is an event called "onBulletinDisplay" but actually when the JomSocial bulletin there is not much reason to load this event into Magento.
Of more interest are the events that signal something is changing in JomSocial: For instance when an user-profile is changing, when an update of the avatar is given or when a karma point is assigned.
The following events are currently present within the MageBridge plugin for JomSocial (the Joomla! plugin-type "community").
The following events are present in JomSocial but not implemented in MageBridge. The reason for this is that we (Yireo) did not find anything useful in forwarding these events. If you think otherwise, please let us know and we see if we can forward the event.
There is one more event ("onProfileStatusUpdate") which caught are attention. The event sounds very useful, but while browsing through the JomSocial-code we could not find any actual change that triggered this event.
These suggested events are yet to be implemented in JomSocial, and if you need this functionality, we urge you to contact the JomSocial team to provide these events.
Above we suggested some implementation or functionality to attach to each event. Note that just with the event the mentioned functionality does not appear, and that not all of this functionality will just appear in MageBridge. However, we are always open for suggestions.