If you haven’t looked for a job in the past five years, you’re probably unaware of some of the subtle changes that now define the job market.  What defines the overall job market, also defines a successful job search.  Jobs are constantly being re-structured, which means an inherent lack of job security.

This article in Time sums it up nicely:

http://www.time.com/time/magazine/article/0,9171,1689208,00.html