I think a nice use case would be obtaining data from a public website. If we can do this in a decentralized way, it solves the whole trustless broadcast of data feed problem. Once that problem is solved, then betting against the data feeds becomes possible. Once that is possible, CFD and other derivatives can be created.
I think you've already brought that up before and it has already been answered before but I'll answer it again in the hope that you might remember it for next time.
You cannot prove anything outside of the blockchain as their is no true way to achieve consensus about that - if you are wanting to say "check the result of a Google search" then every node would have to do the same search and get the same result to "confirm" it *but* in practice they will not get the same result (some might just get an error due to the IP being blocked or some might get a different result due to geographic location, etc., etc.).
Also you would be putting a "huge" burden on every node to have to be doing an arbitrary number of perhaps slow or costly requests just to attempt said verification.
It isn't going to happen James - so please just drop it.
OK, am I allowed to have NXT nodes voluntarily run software and publish AM data with datafeeds that these nodes will peer validate? It wouldnt be in the NXTcore at all, just an application on top of NXT using AM, so I think it is ok, but I wanted to make sure I am not forgetting something and making you upset
P.S. Any feedback on NXTcoins is that DOA also?