Thanks for the information. You're right, it would be too much information for the blockchain. I wonder if some online-wallet exist which has this option ...
AFAIK The Bc.i message thing is purely local, its not on the network.
yea. But everyone can see it. Would be great if bc.i had the option to send a private message with a transaction.
Normally what you do is establish your arrangement with the person you are transacting to in an encrypted channel and do all your communication there. You provide them with a new, never before used address to pay to, and you can recognize the relevant payment by the use of that address.
that's an option, yes. But e. G. I want to launch a newsletter, where you can join with a little transaction. The better (more simple) way to do this would be to receive transactions simply with an email-adress attached. No need to communicate through other channels, no need to create new addresses.
