It also allows you to manually measure the area of towns.
Remember this is only area, population density is another matter
Hargeisa - area 62.98 km2 - image from April 2015

Burco - area 21.58 km2 - image from May 2015

Boorama - image from June 2015 - area 11.11 km2

Laascaanood - image from June 2015 - area 6.83 km2

Berbera - image from March 2015 - area 4.21 km2 (I excluded areas with only warehouses and Livestock holding areas)

The area being measured is within the white polygon - there may overestimations and underestimations since
I traced the polygon manually - I've tried to contain most urban areas within the polygon.
Click on the images to enlarge