Solving this problem is tough because small business owners are an extremely diverse set, and the needs of different types of businesses vary widely. Combine this with a general lack of internet savvy, a lot of folk wisdom picked up from friends and family about the web, and a do-it-yourself mentality means that an MVP is very difficult to sniff out.
The hardest part, though, is support. The price of the service needs to be relatively cheap, but it needs to have good support, preferably 12x7 phone support. Economically this won't scale unless the product is simple enough to minimize support needs. 10 years ago I think this problem was intractable, but with the internet becoming more and more ingrained in our daily lives, it's only a matter of time.
So yeah, personally I think this is a great market to be getting into.