Below is a link to the market statistics that were released by the Multiple Listing Service. In it, they discuss many of the points that I've been highlighting: low inventory, a pickup in sales activity and a fairly optimistic outlook.
4th Quarter & 2012 Market Statistics By Property Type
For those interested in a look at their particular area (by school district, ZIP code, etc.), email me (jeremy@jeremyzucker.com) and I will be happy to send you an update.