> 4. How are you going to prevent your dataset being polluted with 
> copyrighted OS data ? I see that you have the user agreement to ask 
> people not to submit traced OS data but you have no way to prevent this. 
> Indeed the OS could anonymously submit some of their own data to Freemap 
> in order to close you down !

Is there some way of submitting the 'raw material' as proof it was 
collected from GPS rather than copied off a map?  Presumably the acuracy of 
it would be proof enough? Not sure how you'd check the accuracy of stuff 
other people have sent in tho.

> Perhaps I'm being a bit negative here, what do others think ?

It would be handy for people to whack up maps for suggested walks etc.  The 
data should grow quite quickly once people start submitting their own data.  
Could be something for the uni walking clubs to do other than sit in the 
pub...