If I ran MapMyWalk, that's *exactly* how I would run the points system. And I would run devilish experiments to find out how fast I could get people to zoom around my mazes by leaving cheese points for them at specified locations...

My Mum has a single sighthound (Flash, the ancient bossy chocoholic whippet) but she's the only one-sighthound person I know, I think. Most people have at least two. You can get t-shirts : 'greyhounds: one is never enough'...