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SMS LOCAL (beta) is a text-message local-search and directory assistance service that enables you to search for products, services and businesses geographically via your wireless phone or device. For example, you might search for "parking near lax" to locate parking services near the Los Angeles International airport.
I tried it out, and it was took a bit to long and was too clumsy for my liking. It wasn't the fault of the smslocal tho, but the limits of text messaging on phones. As wireless technologies develop this will get better.