Tim Grice discusses Google's recent crackdown on unnatural links and provides strategies for building natural, high-quality links. He recommends thoroughly cleaning up any unnatural links and focusing link building efforts on creating valuable content that is worthy of links and shares. Specific techniques include analyzing competitors, identifying link-worthy landing pages, varying anchor text, leveraging social signals, tracking link performance over time, and developing processes to ensure link quality remains high. The overall message is that sites need to focus on generating natural links and social shares through insightful, shareable content rather than manipulation.