It seemed harmless when I did it. I just wanted to let like-minded people know of another, better option. So far, the replies have been positive.
Instead of spamming via PM, you should do next:
- Create a topic about your whatever want to promote.
- Be creative with description and put all the details, so it can be understandable.
- Refresh the topic with updates, even "bumps" can be useful when there is no things to add.
- If nothing left, try to pay some ad spot on some site with your banner.