This project might be of use to readers of the Urban Decay blog:
The Shrinking Cities project involves documenting and analyzing "shrinking cities", urban areas experiencing dramatic population loss and architectural abandonment. Shrinking Cities seeks to study and develop new methods dealing with/thinking about/developing abandoned areas other than demolition. The project's initiatives focus on Eastern Germany, but the research scope is international.
Interview with Philipp Oswalt, founder of Shrinking Cities project in PingMag.