For the purposes of this discussion, I consider spam to be traffic that's not technical in nature. This may not seem like a big deal, but it's an annoyance and makes people think that either the list is malfunctioning or their e-mail server is malfunctioning. Use language that's appropriate for a mixed, multi-cultural audience. IMHO, it doesn't matter how steamed you are at Borland's tech support hotline, there's no point in making several hundred people listen to foul language. Upon the second occurrence, you will be removed from the list and your subsequent postings will be discarded.
E-mail the second party directly.
The size limit imposed by the list management software is 38K. Please be aware that any message larger than 38K will not be posted and you will not be notified directly. I will make an effort to notice these rejections and inform you privately when I do. Whenever possible, use URLs to point to actual large content. I'll put on our WEB site and e-mail you the URL for posting. You will save all of us time and effort by checking them yourself before posting.