Freelancing is one of the most lucrative ways to earn a living nowadays. You can do it as a side business or you can do it as your regular one. It really depends on how much you can do and how much you can earn from the assignments that you get.
With the advent of technology, copywriting already covers a wide range of media like television, radio, magazines, brochures, direct mail, and the like today. In fact, every word in every brochure, advert, website and leaflet you see is written by the copywriter. Before, copywriters are restricted to being in-house or by marketing / PR firms but now, there are so many freelance copywriters that offer their services.