Any of those using SAPE links were supposedly penalized and downgraded in their rankings over the past 24 hours or so. [seroundtable.com...]
Matt Cutts : just another day at the office for me. :) Okay, gotta look at some really naughty Russian link selling software now.
FWIW - reports of another code based link network biting the dust, with references to a much earlier Tweet by Matt Cutts indicating his interest in putting a Russian network to sleep.
It seems this type of things has a high degree of manual intervention, before sending out tracers and a flicking of the switch to bring the network down. Academic really [ except for those affected ] - but it does demonstrate how simple it can be for Google in this particular style of system.
[edited by: martinibuster at 2:19 pm (utc) on Mar 8, 2013] [edit reason] Fixed formatting. [/edit]
This was a do-follow "contextual" link selling network. They placed do-follow links within the body of blog articles. What I find interesting about it is that it was unnoticed for so long. Possibly because Google is organized in a top-down fashion, with English language decisions at the top and other languages more or less under the radar?
Interesting...I get ton's of marketing emails all the time and remember getting an email in regard to this network just a few weeks ago attempting to get people to sign up to it as it would be "impossible" for Google to figure it out due to it's size and "complexity".