Act as a seasoned SEO content strategist with 10+ years of experience in creating viral-worthy content. Craft a comprehensive guide on how to optimize content for shareability to boost SEO performance. Cover the following key areas: 1) The direct and indirect impact of social shares on [SEARCH ENGINE] rankings, 2) Psychological triggers that make [TARGET AUDIENCE] more likely to share content, and 3) Technical optimizations for [CONTENT TYPE] that enhance shareability. Include specific examples of shareable elements like [EMBEDDABLE MEDIA], and provide actionable tips for measuring shareability through [ANALYTICS TOOLS]. The guide should be data-driven, citing recent case studies, and formatted for easy implementation by marketing teams.