Search Engine supernova – the evolution of nofollow?

The recent Google/Twitter spat that has got much coverage in the SEO community over the last couple week or so, particulary from search marketeers such Sugarrae (otherwise known as Rae Hoffman) and Michael Gray (Graywolf)
Following on from this was a post from Quadzilla over at BlackHatSEO.com examined the possibly of black hole SEO (A phrase [...]