You’ve probably seen (and read about) the “fix incorrect marker location” functionality offered inside the Local Business Center area of Google Maps. What I find amazing is how easily this map location can be positioned incorrectly regardless of the registered address.
Take this ranking for “SEO Consultant London” taken from Google.co.uk.
“W6″ is not located anywhere near Picadilly Circus. Is the incorrect marker skewing the result in the SERPS? If this got corrected, would the ranking disappear? I’ve contacted the site owner to see if we can get a test running.