When I search on Google from an account which I'm NOT logged into, I now find that 3/10 of the results on the front page are locally relevant. Now here's the interesting part.
When I search from home (we use Comcast), Google provides three results which are specific to the state of Florida. Local means the state level. For example:
Florida School Choice | Home Education
When I search from the office (NO idea who our ISP is), Google provides three results which are specific to my municipality. Local means very tight, like my part of the county or my part of Fort Lauderdale. For example:
Anybody else notice a correlation between the ISP and granularity of the local search results?