BaseballGuy - 4:58 pm on Oct 11, 2012 (gmt 0)
Speaking of "neg SEO", I'm doing rep management for a client. One of his customers bad-mouthed his business and it was on a pretty powerful PR5 website.
I blasted it for 3 months straight and it went from position #1 to the top of page 4.
"Blasted" meaning doing what's generally considered "negative SEO" in this day and age, with one or two "twists".
Penguin has been a god-send for negative SEO, for both people like me who use it for good purposes (by helping clients clean up negative press/etc that Google artificially ranks high due to certain keywords being on the site, such as: fraud, scam, lawsuit, etc), and those who use it for bad purposes.