It is not at all practical to shoot at something without aiming. If you are actually serious about hitting that particular spot that you want, you will need to take the time to aim directly at the target. Do not just wake up and start shooting around, you will not hit any targets! This especially holds true for businesses when targeting customers and getting to decide which market segments will maximize their profits.
Very may businesses today are using social media to grow themselves and let the world know that they exist and that is why the free followers are very important to them. To get the free followers as a business, you can start by targeting your ads to pages that are frequented by your existing followers. Get to find out which other pages interest your followers then place your ads on these pages. If people who follow you are visiting these pages, then chances are high that the other followers on these pages will also be interested in what you are offering. This is for the simple fact that they seem to have the same interests as shown by the pages that they focus on.