We should not write a long subject since it is hard to read. Carriage return means end of line and null line expresses end of paragraph. One line should be limited to 70 characters or so. It is very hard to read if you write a message on every other line or in a long line without folding. Especially long lines are trouble to cite.
Some people write a message with indent but it is meaningless.
Text is displayed differently on each machines, so even if the layout is excellent on your machine, it might not be so on other machines. Cite only necessary sentences You should not bother to remove unnecessary sentences. With Mew, citation must be a piece of cake. Make your signature simple A long signature is just self-satisfaction. Do not send prank messages I don't want to warn this kind of stuff.