Oh, this could be very interesting. I'll hop on the waitlist to see how this is going to work.

I'd be happy to collaborate on this and determine if what you're building is what I'd want (as a potential consumer) or what my buddy will want (as a potential service provider).

If you're not already planning an infographic to show payment processing costs, I'd suggest comparing all combos of "wants to pay with {bitcoin,fiat}" and "want to be paid in {bitcoin,fiat}".

For example, if someone only accepts fiat and someone wants to pay in bitcoin, currently that means paying 1.5% to paypal to convert from BTC to fiat, paying fees to xfer via paypal (I think it's 2.5% + 49¢) and then the recipient getting their money ~3 business days later. If they can pay in BTC and have you convert it, I'm guessing you will likely do so for less than 3.5%. It makes the case for accepting BTC even if you don't want to have anything to do with it, and it seems like these people are part of your target market.