Facebook showed me an ad about an artist that I "Like" on Facebook- they had a concert coming up near me in a couple weeks. This was a band I liked, but hadn't

Facebook showed me an ad about an artist that I "Like" on Facebook- they had a concert coming up near me in a couple weeks. This was a band I liked, but hadn't been following closely, and wouldn't have known about their concert otherwise- they had never toured anywhere near me before! Bought a ticket and attended a great show. This is the one and only time a targeted ad really was useful to me, but it sure was useful.