1.  Rising interest rates

2.  End of the $8000 tax credit

3.  luxury market picking back up

4.  Inventory rising

5.  Job growth

6. return to "normal" - 2001 to 2005 gangbusters, 2005-2009 abnormally slow, 2010+ need based homebuying (relo, fam growth, etc)

7. REO/foreclosure inventory

8. ARM resets

9. Local variablity

10. Loss of interest by media

11.