smallcompany - 7:30 pm on May 9, 2012 (gmt 0)
How can they distinguish between spammy and not-spammy?
This can be very misleading and distracting.
Search engines decide on giving + or - points. And their algorithms are secretive.
No matter how much one knows, you're never sure.
A good business idea though, as a lot of people will be willing to do it in a desperate try to get the lost traffic back (Panda, Penguin, or whatever else).