Provided there wasn’t a technical issue, it is most likely that the moderator(s) felt the contribution was not in line with the Content Submission Guidelines.
Some common guideline violations are: personal attacks, insults, defamatory statements, unacceptable user name, and straying off topic.
On average, CBC.ca receives more than 30,000 comments each day. We work to post as many comments as possible to keep the conversation going, but we can’t guarantee that every comment we receive will be published.