with accurate, tweet-level location data you could switch from reading the tweets of accounts you follow to reading tweets from anyone in your neighborhood or city—whether you follow them or not.
Twitter Blog: Location, Location, Location
This is going to have a major impact on local news. Besides Outside.In, which currates blog posts, their is no good source out there for local news in real time…
Most people aren’t down with desitnation viewing, (aka. bad local news casts on FOX) and local papers typically publish with little frequencey