What advantages does this service provide over bitcoin itself? My suggestion would be to make this very clear, and definitely make sure it is explained on the About page.
My guess is that you can send bitcoins to people who don't give a shit about it or know how to use the client and they can in turn pay for things with the coins you sent. I'm thinking of sending my dad a couple just to see if he can figure it out. :)
Agreed. "Without coinbase, this is how you would use bitcoins _____..., with coinbase it looks like this instead ____." Dont assume any knowledge of bitcoins.
Definitely agree with making the advantages clear. I can see how this could be a pretty useful interface to BTC for non-technical users. I might have to try it out myself :)