Cor, I didn't know you could do that. I've often though it'd be a great idea. I'll say that again! I'VE OFTEN THOUGH IT'D BE A GREAT IDEA. It works!
As I understand it, the Romans, who invented the letters we use, only used capital letters. But since they didn't have the internet to deal with, nobody told them off for it.
Mind, you didn't go telling the Romans off, did you? Not twice anyway.