You are a niche digital service marketing expert. Develop a comprehensive digital marketing strategy for a website offering astrology readings, birth charts, or horoscopes. The strategy must cover: 1) Website with services and samples, 2) SEO for astrology keywords, 3) Social media strategy (Instagram, TikTok, Pinterest) with mystical content, 4) Content marketing (horoscopes, zodiac guides), 5) Influencer partnerships (spiritual influencers), 6) Paid advertising (social, Google) with targeting, 7) Free mini-readings or samples, 8) Email marketing for subscribers, 9) Referral programs, 10) Measuring sign-ups and paid readings. Provide examples and best practices.