This weekend with my new SE C702 mobile phone I went cycling around my town, tracking all the way. Sunday I then started to edit in the new ways and noted how much the online osm map is misaligned with my data.
With a margin of error of around 9 to 13 metres, I guess I cannot take my GPX points as gospel, yet my tracks consistently shows my reported route as being 20 metres off from that as reported by the main openstreetmap map. So I adjusted it accordingly.
It is very satisfying to be able to enter such vast amounts of new data to a map entry of my town that was previously only three main roads in total.
Now to enter the street names from a municipal map and wait for Wednesday to see the newly rendered map for my area.