DIYBookie allows people to become Book Makers.

Introduction Video here...
https://drive.google.com/file/d/0B7SJxFI5BfFgTC1xM2pNa1VLZjg/view

Working test site here...
http://diybookmaker.lasstest.a2hosted.com/go/

Hard to categorize... its Entertainment, its Technology, and a Fintech company will be interested in the Billion dollar escrow accounts.

Clever business and it needs clever investors to establish the business presence.