I guess it does depend on where you are and how large the local community is. How far away is the next community? I'm guessing it's not right down the block, but is it conceivable that you could get business from neighboring towns?
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SEO benefits still apply no matter how small the community, though maybe you don't have the numbers of competitors where it's necessary. Is it possible media from a larger city could notice you and could that lead to more business for you? How about your clients? Could you promote them through Twitter and in so doing raise your prices? I would imagine some in your area do business online or at least outside the locality.