For starters (a warm up, so to speak), I am only aiming to edit the accurate locations of some streets/paths, and add/remove some features I know well (been living here for 4 years now), so the remember -part isn't problem - yet. Also, I intend to write down some notes when I do the "final" walk all-over; that is, when I have collected enough data for accurate positions. The majority of tracks are now coming as a side-effect of walking different routes between home, to-work bus-stop, from-work bus-stop, and a local (and a not-so-local) grocery store.

For the accuracy, I need to walk through each section at least 2 times (to get assurance that the tracks are indeed correct), and those sections that are between/near buildings at least 5 times (to cut the deviations into nice average).

After the street/path mapping process I'll try and figure out how to get the yahoo aerial images and add some buildings and perhaps other "terrain" features (if I understood right, that process was allowed by Yahoo).

Once I get the immediate local area mapped "right", I need to adjust my tracking/mapping process to better suit areas that I do not know that well. My memory most certainly isn't up to the job when its about things I've only experienced once.