Policemen- Simple to contact. Theres probably an association list that you can rent or buy.   B. Bird owners- Semi-simple to contact. Theres probably a trade publication or catalog for bird owners that rent their customer list.   C. Parents whose children are doing poorly in school- Harder to contact. You might find a list of parents who have purchased products or services to help their children do better in school.   D. Acne sufferers- Harder to contact. You might find a list of people who have purchased anti-acne products or services.   E. People who hate war- Difficult to contact. You wont find many anti-war lists. You would probably have to create a list through your own lead generation efforts.   F. Print Shop Owners- Simple to contact - The names and addresses for print shop owners can be found in your local yellow pages or an association list.   When a niche is hard to contact, it is usually expensive to contact. If a list doesnt already exist youll have to pay to develop the list, which can be very expensive.       IMPORTANT TIP # 1 - Personally, I would think hard before choosing a niche that doesnt have an association, a trade publication(s), or hold conferences. These are the primary tools for contacting your prospects and fueling your word-of-mouth efforts.       IMPORTANT TIP # 2 - If the product or service you are offering has a high price tag and a large margin, youll be able to spend more money to generate the lead. For instance, if you were looking for people with breast implants for a class action lawsuit settlement, you would probably be able to spend a lot of money advertising to find these people.       In general, the cost to acquire a customer must be lower than the lifetime value of a customer. However, in some instances it can be higher than your product or service cost (i.e. lose money to obtain a customer) if you have a lot of backend products or your product is a consumable that requires reorders.   Question # 2 - Can the niche afford your products and services?   Is the niche that youre marketing to affluent enough to buy your product or service without having to worry too much about overspending? I once tried to sell a product to college students for over a year in vain. A lot of money was wasted, with nothing to show for it.   My mistake was marketing to the wrong people. Students dont have a lot of