Probably I say a bunch ...
Is it a good idea to add to Dolphin the ability to notify user events occurred via MQTT protocol?
With Modzzz Ultimate Notifier module, for example, each user sets his own notification level, but notification is sent by email. Notification by email (or no notification) makes the dolphin platform at a lower level than other social environments, which instead use apps to keep users up to date.
The scenario could be this:
1) This new feature you can connect a Dolphin platform to an external MQTT broker (eg Mosquitto) as a publisher for different topics;
2) Each topic is called with the name of the type of Module. Eg "Photo", "Blog", "Store" etc. and each message contains event specific informations (eg. date, user, description, including URL link where possible)
3) The actual boonex app on a user's smartphone could have a new feature, to connect to an external MQTT broker as a subscriber of specific topics, for which user wants to be notified;
4) for the publish/subscribe design pattern, each new message in a topic is notified to App (and to user)