One thing I’ve noticed recently is that the maps and driving directions from various mapping sites are not all created equal. Two times recently I’ve tried to get driving directions using Yahoo Maps and either gotten no route at all or a bad route. The same search on MapQuest yielded perfect results. Vicinity’s MapBlast service was also much better than Yahoo Maps, and offers an alternate style map called LineDrive that’s really cool as well. For what it’s worth, Yahoo licenses its maps from NavTech, which doesn’t seem to offer an online service of its own. However, they also provide maps to Microsoft’s mapping service, which kind of sucks as well.