Are you adding a URL or just Text? If you just add a URL, is that URL banned? Then it's probably not allowing it in the text either. Without more information it would be hard to tell.
A significant portion of news submissions are spammy in nature. Some is borderline, much is outright spam. I've cleared out as many as 10 posts in a day. I think Fabien catches just as much of it.
If you put the information you were trying to post in a comment on this thread, or reach out via twitter as much, it might be easier to give a better response.
Poor quality posts that are selling/promoting consulting services and/or unrelated to JS are deleted as soon as spotted. Also, there is no gain in terms of SEO as links have a nofollow set. Most people in this community don't like, appreciate or want such posts and actively vote them down.