There are various reasons for the steady selling:
Post# of 85557
1) People have "given up"
2) People need money for Thanksgiving + the end of the Year
3) People need money to pay income taxes
4) Tax loss selling for those in the Red - take the loss this year
5) Unexpected expenses - car repairs, roof repairs, medical bills etc
6) Property Tax in California is due by December 10
7) People need money for the planned family vacation