Common businesses. While most industry forums have visitors who are looking to purchase the products and services of the industry, most members will run a business similar to yours.You can read a book about an entrepreneur, and i see what made them successful. Then you just have to imagine how that idea, at least the core of it, could be applied to your business. Most great advertising and marketing ideas are similar or even identical across all industries. A few tweeks is all it usually takers to generate a profitable new idea for your business.