Can't wait to see a silver/gold marketplace on the steem blockchain where users can buy and sell with Steem, SBD, and other Cryptos.
I forget the term for it, but I know the steem blockchain has the code for a "middle-man" function to help with these transactions. I know it's just a matter of time before this becomes a reality and can't wait to do some silver-gold shopping here on steem.
I think the block chain is a great technology for a peer to peer market place, there's so much controversy on other platforms with changed or deleted listings. If someone hasn't started this, there's a great idea for some intrepid programmer.
If you know one I'll only charge 1% profit for them to use my idea!