Flawed article (but not Greg's fault, see Edit).

The dataset he's using is like 10x smaller than the one displayed in AO.

Edit: <@gregsadetsky I have to answer you like this as HN partially censors me by limiting my comments to around 4/day>

Something's weird then (on either end).

Go to Downtown Toronto, I see about 200 places total. On your map I only see about 50.

Actually ... if you scroll down from there, on the southwest side of Lake Ontario, just north of St. Catharines, I see a big cluster of 197 elements, which does not show on your map. I think the map on AO is overcounting markers. You discovered a bug Greg, congrats!