Well, I think that your presence is a good thing. I am a fan of fantasy books and chances are pretty good that I will get around to reading your wife's work just because of your posts here. If the price is right, I'll try almost anything
That said, forums are a great way to stay in touch with the reading public and get a gage on what is going on. And the internet has allowed us the opportunity of finding authors that we never would have found out in our little slice of the world.