Today I spent a couple of hours wandering around on a beautiful day, with nearly a hundred waypoints recorded , using both audio and photo.
Then of course I come home to JOSM, load my data and find that nothing lines up to the current data. How are you supposed to know how accurate the previous data is?
I try to add an accuracy tag to my data, so at least if I go out again and get a better accuracy I can replace my nodes.
Pity not everyone does, it could make life alot easier.