Don’t believe me ? Here are a couple of examples: In the last few months Facebook dramatically improved Custom Audiences, allowing you to use retargeting or target a very specific niche of users that suits your needs. With these new features, advertisers have managed to lower their new customer acquisition cost by as much as 73%. This kind of targeting is so laser-focused that Facebook ads are now a very good solution even for B2B companies, once Facebook advertising’s Achilles’ heel.