As Business persons, Entrepreneurs in any field, let me tell you the best way to build and scale your business is simply generating leads and building your List for service delivery while for product, generate your leads and redirect them into a sales funnel. Watch a tutorial I made on Using Getresponse Autofunnel
Lead Generation, the value I preach and solution I advocate.
Why?
Leads are people who opted in for your service, Ideas or products. Having such list in your care gives you something like frame work, targeted population to work on and try to establish some valuable relationships.
Leads are your potential customers, even if they do not buy or purchase your products or services today, they are in your list, and you can always re-market your services to them.
Lead generation is a database of people available at your tips to interact with and convert at the time of need.