Welcome to the board!
You can include a link to your store in your iVillage signature line. You can have a graphic that links to your store, and that is perfectly fine. That way, when you participate on the message boards other members can see your tag. As long as it's in the signature area, it's fine.
If you're on Facebook, you could create a page for your business to get the word out on products and promotions. Craigslist is also a great way to advertise for free. Have you ever done fair/festival booths or "European markets?" Our town's European market has some candy booths that seem to do well during the season.
I am new to all of this and trying to get my business out there. I posted on several boards like this and have gotten alot of views quickly which