Hmm. Not sure I'd favour that - sometimes it's useful to see earlier postings without crawling up the message chain.
And we always have the option of deleting earlier content if it no longer seems relevant to the reply.

>Better yet, anything with multiple greater-thans gets deleted when posted.
>
>>I wonder if it would be possible to suppress the addition of the right-arrow(s) within 'pre' sections of earlier posts in a message - I sometimes want to grab the code and paste into a code editor. Cleaning out the arrows can be a pain :-{