A slowing economy will lead to the era of the 'ghost mall', according to this article from Slate.
"But when the economy slows and threatens to go into recession, it's usually bad for all classes of real estate. And when the slowing economy is led by pooped-out consumers, it's usually disastrous for the tenants of malls and strip malls-and for their owners and lenders. All of which suggests: Get ready for the ghost mall!
The retail real estate market has already started to slow. In the third quarter of 2007, 7.4 percent of retail space nationwide was vacant, according to Reis Inc. A vacancy rate of 7.4 percent isn't tragic by any means. But it's the highest level since 2002, and it's up from 6.8 percent at the end of 2005. The third quarter of 2007 marked "the tenth consecutive quarter of flat or deteriorating retail occupancy at the national level," noted Sam Chandan, chief economist at Reis Inc., in a recent report. Thanks to continuing growth in supply and flagging demand, there was about 140 million vacant square feet of retail space in the third quarter of 2007, up from 124.4 million vacant square feet at the end of 2006."