A concreate 'use case' about how KVS helped me.
I had a ticket for morning flight PDX-ATL when I decided to move it to a night flith a day before. The flght was fully booked and Delta even didn't want to put me to a waiting list. I executed a query in KVS periodically since yesterday but today all of a sudden one place showed available. I called immediatelly Delta and booked it! What's a luck, I couldn't do it without KVS!:-))

Thanks for the great tool!

P.S. contribution is on the way