incrediBILL - 1:22 pm on Apr 10, 2012 (gmt 0)
be cause block each page will take 2 Month
I don't think NOINDEX works any faster if that's your only criteria. I've had robots.txt blocking alter what's in Google's index pretty fast in some instances, not so fast in others. However, if you want to speed up the process, after altering robots.txt or whatever, go into WMTs and use Crawler Access -> Remove URLs to get rid of them quickly.