In the SEO industry, there seems to be an odd trend with many SEOs. A good number of them tend to blame a Google algorithm update for the decline of their ranking.
Once this conclusion has been reached, they wonder which ranking factor is at fault, but realistically, this is not the right way to go about it.
Barry Schwartz hosted a panel with a few veteran SEOs where they discussed Google algorithms. He had asked what SEOs what they get wrong about these updates.