2. It is targeted. Facebook knows a great deal about its audience and they let you use that knowledge to present your message to the right people
3. You can attract your piece of the pie. No need to advertise to lots of people who don’t want what you have
4. It is flexible in timing and budget. Promote when you want and the amount you want
5. It works because you can make sure it work. Test one thing. Whatever works, do more of. Whatever does not work, do less of Repeat as necessary.