I should clarify 3. Any lines that have more than 2 >> are assumed to be old quotes. One problem with old quotes is that as the > build up, more carriage returns get added and the lines get split up and harder to recogise as earlier quotes. Otherwise if any lines are prefixed with 1 or more > then they can be checked against earlier messages.

Note that this should be applied to the messages that are posted to the site *not* the messages that get emailed out. Reason being, as Ken said, the quotes make it a lot easier to thread the conversation back.

regards
David Cameron