I like the idea; I find it to be simple and compelling. The website has an equally simple and classy look to it.
As a side note, I didn't notice any tags in the photos on the blog post url you provided. Not quite sure why that is.
I agree with the earlier comment that the best way to get this promoted is through some clever networking with popular blogs/writers. They are often highly accessible and are willing to early-adopt a service. And, of course, they will spread the word if the service is good.