The readability of online maps: it's the details DEC 03 2010
A really nice analysis of the readability of maps from the three big online mapping companies: Google, Bing, and Yahoo. As you might expect, Google is the clear winner; they pay more attention to the little details than the other two services.
It turns out that Google uses a variety of techniques and visual tricks to help make its city labels much more readable than those of its competitors. From the use of different shadings to decluttering areas outside of major metro areas, it sure seems like Google has put a lot of thought into how it displays the labels appearing on its maps. I have no doubt that little touches like these are among the many reasons why Google remains the web's most popular mapping site.