There were only ever two reasons to visit streetmap
Genuine OS maps, and elevation data. Seems to be impossible to find the elevation data now, unless I'm confusing that with multimaps, which now appears to be Bing.
It doesn't support a scroll wheel - even openstreetmap supports that. It's true that for very small streets google maps is a bit lacking, but that's rarely needed, even on foot - which isn't possible, because there's no app for openstreetmap.
Compare that to Google Maps, where it's possible to navigate an unfamiliar foreign city, and there's no competition.
Biting the hand that feeds IT
