[jwdunne]

I don't think demand problem. If you see here, interest in the search term 'dynamic dns service' has increased over 12 months:

http://www.google.com/insights/search/#date=today+12-m&q... dns service

What are you doing in terms of marketing? You didn't mention this because there's a number of things that you could try to improve both SEO and conversion rates. I wouldn't expect to see many results unless you've spent some time marketing the product.

For example, the page title on your how to guide could be improved to include a searched for keyword such as:

'dynamic dns howto - $5 DNS'

Another example would be thinking about how you can expand your website in terms of content so that you can target a broader range of keywords.

These shouldn't be done on there own and you will need a solid plan for continued success. Let me know if you wanna chat more about this: [e-mail].