This post is rather worrying. It suggests that submitting links 'unnaturally quickly' or having an inbound link that looks 'suspiciously' like a paid-for link can result in a site being unindexed from Google altogether.
This would be a catastrophe for many ordinary businesses. Google accounts for the huge bulk of visits to my commercial sites. I suffered a severe loss of traffic moving from one host to another (and also switching domain names, temporarily) about a year ago. I have still not recovered.
I am a great fan of Google, but I am not unaware of the fact that it could crush me and not even notice.
