Thanks.
It's not a regular exchange as we know, instead, it's a anonymous exchange gateway. that is, one do not need to set up any account or password, he just provide an address (devcoin's or ripple's), sending or receiving DVCs or IOUs. We won't deal any of these password things
All the password, or security concerns ripple's account security, besides my gateway server security.
I retitled the award, Exchange Gateway:
https://raw.github.com/Unthinkingbit/charity/master/bounty_23.csv
it's still four shares, and doesn't take away from the stand alone exchange bounty.
I suggest a second place award of two shares for the next person to make an exchange gateway, any objections?
I agree, this seems a good solution, concerning a ripple gateway is very different from traditional standalone exchange.