This is Vilfredo Praeto. In 1906 he observed that 20% of the pea pods in his garden contained 80% of the peas. He then looked around at land ownership in Italy and discovered that 80% of the land was owned by 20% of the people. As he noticed the same pattern in other phenomena, he developed the Praeto Principle – “80% of the effects come from 20% of the causes.” In business it is often applied to sales and profits – “80% of the sales/profits come from 20% of the customers.” The Praeto Principle is important when developing an online presence. Everything should be focused on attracting more “ideals” like the most profitable 20%. 20% is a rough estimate. In some situations it might be 10% or 5% or 15%. The point is that profiling your “ideals” is something you should consider before starting your next online project.