[OSM-talk] Fwd: Why doesn't OSM ?

[Aun Johnsen]

On Sun, Dec 27, 2009 at 2:36 PM, Matt Amos <zerebubuth at gmail.com> wrote:

> On Sun, Dec 27, 2009 at 11:43 AM, Aun Johnsen <lists at gimnechiske.org>
> wrote:
> > On Sun, Dec 27, 2009 at 9:26 AM, Liz <edodd at billiau.net> wrote:
> >>
> >> On Sat, 26 Dec 2009, Frederik Ramm wrote:
> >> > 1. What do we want to protect?
> >
> > The data is fully open, but some people want to reduce their fingerprint
> on
> > the data to protect themselves, for example they submit their GPX tracks
> > privately so it will not be possible to derive from them where he lives
> or
> > works. This doesn't mean he is holding back data, he only chooses to give
> it
> > without his fingerprints.
>
> this isn't quite the case. even if tracks are submitted privately it
> may be possible to find common locations such as home and work from
> the anonymous points. then it also might to possible to find
> corresponding local editing to get the user. for example, some of the
> calculated home locations from http://stat.latlon.org/ are quite
> accurate - mine is only about 200m from cloudmade's offices, where i
> used to work.
>
> if you are really very concerned with your privacy: don't upload
> tracks which include your home or office locations at all.
>
> cheers,
>
> matt
>

200m is quite a distance if they have no other links between you and OSM, if
that possition is the only thing they have to connect you to OSM, than how
many other potential contributors live within 200m of that position? If that
is in some of the larger cities we can talk thousands of people.
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