for bringing this topic.
Barter economies goes far beyond from what tradenow.gr business model can offer.
On Argentina 2001 financial crisis, thousands of barter clubs emerged from middle class as a grassroots palliative to scarcity. By 2002 about 5 million people resorted to barter to meet basic needs with no money (frozen bank accounts, inflation, riots and looting to contextualize just a little).
Local barter clubs formed a network with no central node or regulations. They were not even based on LETS or other fundamentals because of its spontaneous nature.
The main factor of barter network fall was fraud: Faking IOUs, bond inflation, dishonest club leaders, etc.
No need to say BitShares would have been an ideal solution for those few but decisive weaknesses. And it makes centralized business models like tradenow.gr obsolete.
I think of a customizable mobile wallet that issuer organizations can easily tweak to look as they're own, with the ability to show it's name and just they're own UIA, with the trading pair they choose and maybe an option to enable some advanced features like recurring payments and accout permissions. A wallet that issuers have to customize just once to bring it simplified to users, so they don't get scared having to understand or to trust BitShares at all.
Non profit organizations and communities would gratefully pay for issuance and tx fees in this scenarios and may become big on ramps as a side effect.
I'd like to collaborate on something like community/non-profit organizations issued assets.