1) Google has developed new algorithms like Penguin and Panda that aim to identify and penalize thin or low-quality content and unnatural or manipulative linking practices. 2) Penguin specifically targets sites that have more inbound links than their content quality and reputation merits. It also penalizes sites that engage in heavy anchor text over-optimization. 3) To adapt, site owners should analyze their link profiles and inbound links to identify potential issues, remove manipulative links, focus on creating high-quality content tailored to their audiences, and develop natural linking partnerships within their topic communities.