Method and arrangements are provided to generate supplemental analysis modules for items of invitational content, the modules including an event dictionary and event handlers. Such modules are configured to collect event information at an end user device associated with the operation of an item of invitational content, determine whether the event information corresponds to an entry in the event dictionary, and, upon determining that the event information corresponds to an entry, identify an event handler corresponding to the entry and routing the event information to the event handler, where the event handler is configured for generating an event message.