Comment Count in Conference

I have a Spark Conference room of between 5-8 people.

I need to be able to grab the number of comments by each user, and display them on another webpage, similar to a leaderboard.

Any ideas on where to start?

Not really a Spark question. Moving it to Openfire forum for now. Message history is stored and managed by the server. So you need to query the server somehow. Maybe you can use Smack library and create some app for this.