Make it official: Google's not immune from the bad economy and plummeting ad market. We've been hearing for weeks that Google would have layoffs. Tipsters tell us Google is cutting 200 employees today. The cuts, we hear, are concentrated in Google's sales and marketing operations. One source writes that the division that used to be DoubleClick before Google acquired the banner ad-sales network in 2007 was especially hard hit with more than 50 jobs eliminated in New York.