trying to find info about it is a bitch... :/
at least we can copy asset ideas:
1) Airlines - transferable flyer miles create a more dynamic and fluid market for airline tickets, hard nut to crack but an obvious one, supply is created by the airline's economists/consultants and destroyed when redeemed for tickets. You just need to convince one airline.
2) Game companies - most game companies that rely on microtransactions go through the Google or Apple payment gateway and lose 30% of their revenue, but those companies can't regulate how they change their own game data-base when a blockchain transaction is recognized. I can email several people I know in both the indie and social game sectors to see how interested they would be in trying a transferrable, higher margin currency for their premium game content.
3) NGO's could use these coins to try and kickstart economic activity in regions where they are operating, Auroracoin style, a bit of a long-shot but the PR and actual economic upsides are huge. I don't have such a large contact list in this segment but it's worth going through a DB of NGOs doing development work in underbanked regions and cold-emailing them.
+1. Maybe it is time to create a Nxt business development committee or Nxt foundation to collect, consult, promote, and develop this kind ideas to help business persons to create business on top of the Nxt infrastructure.