Let’s begin by taking off the table the fact that many people really hate them. Assuming that that’s not the case, usually the 100 pixel x 72 pixel size is too small to even show the poster image, and the maximum 90 characters makes a tweet look like a novel. It’s true that Facebook ads can be dirt cheap– for the price of one weekly ad in IndieWire– I once got 60 million “impressions” (times displayed) on Facebook– and it offers prodigious targeting abilities allowing you to zero in on fans of any director, actor, movie, social issue, among other 
things, but still, you end up with a bargain price on a zillion itsy-bitsy ads that I personally don’t think will directly lead to anything as big as a ticket purchase or a video viewing. Selling shoes or an exercise program or ice cream cones, yes; movie tix, no. In my opinion, the sole purpose of those itsy-bitsy teeny-weenie ads on the right side of the page is to drive people to like your Facebook page. It’s worked for me and countless others and it can work for you (if you do it right).
