This podcast episode discusses the optimal criteria for keyword harvesting in Amazon advertising. The hosts explain the pitfalls of overharvesting, such as targeting low-volume keywords and irrelevant search terms, leading to wasted ad spend. They recommend prioritizing keywords with at least two orders and significant search volume, verified through tools like Helium 10 or Datadive, and focusing on same-SKU orders for better relevance. The hosts also advocate for a manual review process even when using automation tools, emphasizing the importance of relevance checks before adding keywords to campaigns. Finally, they advise against automatically negating high-ACoS keywords, suggesting that these often indicate relevant terms with improperly set bids that should be moved to manual campaigns for better bid control.