It would be nice if the system that is used to quote the message you are
responding to were to add the name of the quoted person:
"Jochem van Dieten wrote:"
Also, as per RFC 2646 section 4.5, it is customary to include a space after the
">" sign to distinguish between a ">" as a quote identifier and a ">"
that is part of the quoted text.
Jochem