A few interesting posts about the vTorrent client running a classifieds section for private and public trackers.
Those with private trackers can post ads about their private groups and then do private or group chats with people interested in joining the private tracker.
It would be interesting to add ratings to those doing the adverts and users - Uber for BitTorrent
(can't take the credit for that).
With encryption options, everyone remains private.
vTorrent could make a top 20 coin just on that alone.