the ps3 will keep selling by lots and lots and i predict that the ps3 will rise in yearly sales.
2007<2008<2009<2010<2011
then after that it might slowly decline, and have record breaking year in 2011
with the Wii
2007<2008<2009>2010>2011
the reded section is up in the air for me, depends how well the Wii does around xmass.