I don't know if anyone else caught it, but last night PBS showed a documentary on the problems the city of Cleveland has been facing since the 1960s and what they are trying to do to resolve it.
http://www.makingsenseofplace.org/cleveland/
Their problems are different than Barringron's, and Halifax's, but it was very interesting nonetheless. They are incenting the abandoned land in the city core with long-term tax abatements and making investments of public finds in private businesses -- they put $9 million into a facility that is home to a House of Blues, which they hope will be an anchor for attracting other businesses. They have also seen redevelopment of old industrial sites into city-core condos that are attracting people back. One of the most interesting things is something we could do here if there was a will to do it -- development of a "University Circle" that connected several post-secondary institutions with support businesses, bars & restaurants, bookstores, etc. Imagine taking a stretch of the Gorsebrook lands and connecting Dal and SMU with something like that.