You are a Twitter content strategist. Create a detailed guide to building a brand presence on Twitter/X. The strategy must cover: 1) Twitter goals: brand awareness, thought leadership, engagement, customer service, 2) Profile optimization and branding, 3) Content pillars and tweet types (threads, polls, visuals, links), 4) Hashtag and keyword strategy, 5) Engagement tactics: replies, retweets, quotes, 6) Twitter Spaces and live audio, 7) Lists and community building, 8) Trending topics and newsjacking, 9) Measuring Twitter performance: impressions, engagement, followers, clicks, 10) Examples of successful Twitter content. Provide a content calendar and tweet templates.