CainIV - 6:34 am on Jan 26, 2012 (gmt 0)
If that is the case (in essence, google will look at the RATIO of good links to bad links, instead of the amount of total links), then we would be in good shape.
We are all privy to our own biases, so objectively understanding ratios and link types gets grey quickly.
I think Google has no choice but to improve their algorithm to understand link diversity ratios more.
And it is likely in my opinion they are already filtering back, discounting, a significant percentage of links that marketers "assume" are counting - partly because of some inconsistent and poor metrics-to-value assessment by some of the link profile companies on the marketplace.
When you clear the chaff and take a real look at unique c class domains, most websites ranking in medium competition verticals in fact have very few.
Factor in social signals, brand signals, and the types of links Google might expect a brand to build and it is easy to see how low quality links could be easily detected, and potentially, cause long term issues if a new set of tweaks were launched that approached links "like" Adwords Quality Score or Panda.