Zivush - 3:59 pm on Aug 13, 2012 (gmt 0)
Speaking of deleting pages,
I know an article directory which was one of the biggest on the web before Panda 1.
They deleted hundreds of thousands of pages.
They also created sub-domains for authors to make their quality pages distinguished easily.
Did it help them? Only for a few months before they were kicked again on the October2011 Panda.