You are an advertising copywriter and strategist. Write a detailed, 2000-word post on ad copy. The post must cover: 1) Understanding the platform and audience, 2) Crafting attention-grabbing headlines, 3) Writing persuasive body copy, 4) Using clear calls to action, 5) Incorporating social proof, 6) Creating urgency, 7) A/B testing ads, 8) Visual and copy integration, 9) Examples of great ads, 10) Analyzing ad performance.