In one area, anyway. Compare the search for 6-4135 Shipp Drive on Nominatim:
http://nominatim.openstreetmap.org/?q=6-4135+Shipp+Drive&polygon=1
and on Google:
http://maps.google.com/?q=6-4135%20Shipp%20Drive
Notice how Nominatim nicely highlights the exact house while Google needs confirmation (when only one of the 4135 Shipp Drive locations has sub-units) and then misses the house by 140 metres when the correct location is chosen.

It boggles me, however, why no OSM search tool has searching for intersections implemented, e. g.
http://maps.google.com/maps?q=Hurontario+and+Dundas,+Mississauga
However, Google Maps doesn't seem to have this functionality worldwide. See:
http://maps.google.com/maps?q=Stettemerstrasse+and+Hanfpünt,+Schaffhausen
This suggests that they store the names of intersections separately from the names of the intersecting streets. Weird.

I don't know where I was going with that.

Clearly the process of tracing the low-resolution Yahoo! imagery is not complete, not to mention the high-resolution areas. (OT: Stay tuned for a map of the proposed widening and interchanges on 17 between [55] and 69, in the OSM tradition of mapping stuff before it's constructed :\)¹ )

¹ Not sure on the best way to escape the smiley. Xkcd² recently had a comic about this but did not propose a definite solution.
² HEY EVERYONE IM DISREGARDING XKCD'S SPELLING GUIDELINES !!!!!!111!!1!11!!11!1!1!!1nineeleven

As I switch to using public transit for the winter, I have to stop surveying new areas. I will continue tracing stuff from aerial images, but the only road names there will be those from my memory. See you all in March.