Nielsen is forecasting sales of more than $98 billion for the November-December 2008 holiday retail season.  But amid worsening economic conditions, U.S. consumers are likely to be more cautious than ever with their spending. 
A recent Nielsen survey of 21,000 U.S. households found that 35% plan to spend less this year than they did in 2007.  Just 6% will spend more this year, while 50% say they’ll maintain the same level of spending from 2007.
Lower-income households reported large reductions in their holiday spending — but so did high income households.  In all, 37% …