The donation of good quality aerial imagery by [[Bing]] can make a real difference to the detail it is possible to map in OSM.
After mapping roads and main points of interest using various physical GPS methods, I thought the map of [[Cramlington]] Northburn looked pretty good. All the roads were well geo-located, and some building outlines were mapped where their location could be inferred from GPS tracks.
As you can see, good imagery opens up the possibility of including mapping right down to individual houses. Details mapped via GPS stay put, however previously inaccessible features such as complex building outlines make a dramatic appearance! After a bit of work gathering house numbers, searching for a house number and street in the nominatim gazeteer search now goes straight to the individual building.
With enough effort, it is quite possible to achieve a level of detail better than Ordnance Survey 1:10k Street View using [[Bing]] tracing. The hard part is putting in enough effort - tracing and tagging at this level takes a lot of time to get spot on.
Two estates done, another thousand to complete... :-)