If you provide a house-cleaning service, Facebook knows telemarketing data who has a full social and business life with plenty of disposable income to spend on home help. If you sell T-shirts aimed at -year-olds who enjoy Parks and Recreation and alcopops, Facebook are going to have a section in their little-black-book that ensures that you advert hits the right timelines. It’s amazing. And it’s pretty hard to deny its value.

You can target your advertising by age, gender, interests, location, website interests – basically, anyone you can think of – they have demographic information to reach them.The Bottom Line:PROS You can target your advertising to an extremely specific target audience – people who are very likely to interact with you. You offer them something they want. Win win. It’s completely trackableCONS Reaching saturation point (to a certain degree).