OK, your above post got me going on some other ideas.

Imagine an "Uber" sort of service that is run by a blockchain (like Steem). Instead of paying $10 and $2 goes to the driver and $8 goes to Uber, you would have $9.75 going to the driver, $.25 going to the blockchain service fees.

Yes, this new economy will upset the apple cart! :-D

However, am I correct in saying that data in Steem is really non-persistant? (That is, it doesn't stick around very long, right?) For a gig-based service like Uber, you would want certain features to be persistent. For example, if you rate your driver 5 stars, and gave a review that he played all the right music on the car ride, other people should be able to look that up in the future. Can the Steem network hold persistent data like that? I'm not sure.