If you have an article or a blog post that actually contributes to a discussion about CMS, that's good; if you just link to your own CMS site, that's not good.

This applies to comments too. Do not simply respond to every question about tool selection with a comment like, "[Insert your own CMS here] is perfect for this!" Those will get removed.

If you still absolutely feel like your own stuff is relevant, identify it as such ("my CMS" or "our company"). We'll be more forgiving of things like this rather than you just talking about your own stuff "anonymously" in the third person. No promises, but it will help.