In a sense, this is kind of like graffiti for the Blockchain. The question... should we spam the Blockchain with transactions for the sole reason to spread messages?

It's a cool idea, but we need to think what impact this will have in the future, when the Blockchain grow too big for individuals to run a full Bitcoin node, due to spam.

When they increase the block size, more information will need to travel through the Blockchain and the overhead services like this will add to the blockchain, could put a lot of

strain on the network.