I assume it is well established that this is not possible or a question that would only be asked by someone with little technical understanding.
I'd just like to know why it's presumably not possible, because it would be a pain wouldn't it? Sending lots of useless information to the network? How can we rely on people only sending transactions to the network?
What don't I understand here?
Thanks.
edit: I'm not saying their useless info would end up in the blockchain, I'm just saying the nodes would have to deal with loads of spam all the time.
edit: get technical, I love it