It's also a violation of HGTV Message boards Terms Of Service.
Members can click on the yellow triangle at the bottom right of the post, and in the pop-up box, type Advertising or Forum Spam to flag it to the Moderators.
Pamela, I was instructed by another poster that advertising is permitted by the mods so long as it's limited to the following locations: use of your business name as user name (as you already did) and placement of your tag line (e.g. Home Decor, Furniture, ...), name and any applicable website references in your posts' signature lines.