>
> However, if you're able to use the payment protocol then you probably
> don't need stealth addresses to prevent reuse.
>

I was thinking that people could upload a payment protocol file somewhere
once (like to their personal web page, or shared via dropbox or google
drive or some custom new pastebin style service), and then just encode a
regular bitcoin URI into the qrcode on the billboard.

Likewise, I could attach a payment request to an email and send it to you,
and now you can pay me whenever you want forever.

Getting a little static piece of data to someone *once* should be something
we can make easy. Constantly refreshing it, on the other hand ...