Here is one way to get UIAs trading:
Everybody loves to trade altcoins using centralized exchanges like bter.com, so we could have an exchange website that integrates its orderbook entirely with the BTS blockchain. Users logon and put in bids on the site for altcoins, and they dont even know or care that they are actually trading on the blockchain. All deposits on the site are automatically represented by UIAs on the blockchain. This could even be good for volume because the orderbook is accessible not just by the site's customers.
Is anyone working towards this already?