The web page contains a series of blog posts discussing AC (air conditioning) units. Themes include their common presence in everyday life, their impact when grouped together on building exteriors, their surprising use as clotheslines, and an innovative combination with solar heaters. There's also a critical look at their impact on the airflow and ventilation in older buildings, once modern AC units are installed.
bldgblog: An entire blog about the aesthetic impact of air-conditioning units on architecture: http://acfacade.blogspot.com/