The volumes are 10,528,057,000(NYSE)/2,823,449,500(NASDAQ) at 6:30pm from http://finance.yahoo.com/mo. The volume of NYSE today is less than that on 09/19/08 and 10/10/08 but greateer than that on 11/20/08. The volume of NASDAQ today is less than that on 11/21/08, 10/10/08 and 09/18/08.
The pull back is at the corner. The advance/decline ratio is about 4:1 at NYSE with today's big advance, buge volume. This ratio is far less than the A/D ratio of Oct 10, Nov 21, 2008. Expect to see sell off tomorrow or Friday, and last a few days.