Facebook showed me an ad about an artist that I &quot;Like&quot; on Facebook- they had a concert coming up near me in a couple weeks. This was a band I liked, but hadn&#x27;t been following closely, and wouldn&#x27;t have known about their concert otherwise- they had never toured anywhere near me before! Bought a ticket and attended a great show.<p>This is the one and only time a targeted ad really was useful to me, but it sure was useful.