Usually, when someone mentions their new work in this forum, the subject line indicates that it's an advertisement for a product in the MarketPlace. That makes it easy to skip over if you don't want to look at the advertisements.

As for comments to artwork, the established artists probably get more comments because the commenters are friends or fans. Both take time to develop. If you keep posting, and take the time to give useful comments to others, I bet you'll find that over time you'll get more and more comments.