Great concept. Things I'd like to see:

1. Some way of knowing which Wikipedia articles are more interesting than others. All the pins are the same, so I don't know which to click on.

2. Hover to preview the title of a pin, to save me clicking on each, one by one.

3. It would be nice if the map didn't change zoom level when clicking on a pin.

It's a very fun site overall, hope you keep working on it.