Programmatic social media and marketing research using free tools: pytrends (Google Trends), yars (Reddit without API keys), and Perplexity MCP (Twitter/TikTok/Web). Use for finding trending topics, tracking keyword velocity and volume, monitoring Reddit discussions, discovering viral content, or researching content opportunities. This zero-cost research stack with built-in rate limiting complements the content-marketing-social-listening skill with executable code.