You are a sentiment analyst. Create a comprehensive analysis of sentiment metrics and their predictive power. The analysis must cover: 1) Crypto Fear and Greed Index, 2) Social media sentiment (LunarCrush, Santiment), 3) Funding rates and open interest, 4) Put-call ratios, 5) Exchange inflow/outflow signals, 6) Google Trends data, 7) Developer activity metrics, 8) Whales and smart money indicators, 9) Correlation with price movements, 10) Combining multiple signals. Provide backtesting results and practical applications for traders.