The Mad Men era may be behind us, but the art of copywriting is alive and well. And we're not just talking about ad agencies. Still bootstrapped and getting your business off the ground? You'll probably be writing copy for your website, social media, ads, decks, and more — all on your own. Working in marketing? You'll likely find yourself writing a tagline or two. Sales? Try selling without copy. Essentially, there are very few entrepreneurs who wouldn't benefit from improving their copywriting skills.