Finding the local content using a search engine is at the heart of Mobile search.
Intrestingly there are applications like 877-520-FIND.
This is like Yellow pages on your mobile
If you are searching for a shop in near vicinity, Just sms the name shop/biz you are looking for to 877-520-3463.
And service is free of charge and Ads. So how do they make money ?
"However surprisingly it's turning out to be much tougher to find a
local pizza restaurant than it is to search the globe. There's a lot of
effort going into Local Search and it's tough to stay on top of it and
see the wood for the trees"
That sums it up.