purplekitty - 5:55 pm on Jul 6, 2013 (gmt 0)
This isn't really surprising when you have Matt Cutts telling you, yeah, start a new site if you've been hit by Penguin.
And new sites are replacing the sites that used to rank before Penguin.
I've started getting emails from SEO companies suggesting that I build multiple sites for my niche to make sure that I'll easily be able to recover with a new site if I get hit by Google updates.
If I wasn't an actual businessperson but was instead a spammer looking for quick traffic, I'd probably allocate my time to just building new sites too.