Though I've been resisting it from the beginning, private messaging is on the way. This should help open up communication between players and fits nicely among a handful of other changes on the way (per-match attachments like replays, photos, and videos, also match scheduling and voting).
I have 5 development branches of Challonge, so I either have ADD or there's a lot coming through the pipeline...
Challonge.com development info for curious challongers
