When the clan/team matches are introduced I think it would be a good idea to have some form of 'pigeon hole' feature for users.

This would allow clan leaders to arrange they're clans easily and will allow people to arrange times etc with much less hassle.

There could be a limit of 5/10 messages per user and then as another way to reel the customers in premium users could have an increased message limit.

If you mean Offline Messages etc.., this was listed on the "Upcoming Features" thread, created by nick.
http://www.funkypool.com/viewTopic.do?topicid=6533
But was removed a few months ago. So don't know if this will still happen.

Could be good for a premium feature though.