I don't mind discussing it. It's not a secret, as anyone on Facebook could simply visit our website and look forward to a Facebook ad :)! I first started running large scale Facebook campaigns at another employer (b2c) in 2013, ran them until I left there in mid-2014, and after a bit of a step away from them while moving across the country and getting a new job, we've begun running them again. While I can't share specific stats, we've acquired real leads that have turned into customers at a cost that we're comfortable with right now. I'll admit that at a company with different unit economics and lifetime behavior, the calculus would be different, but my point was simply that Facebook ads do work for businesses, if not all businesses. Also, have to give Facebook credit for continually improving the product (though the Power Editor remains insanely frustrating and I'd do anything for an offline AdWords Editor for Facebook). If you'd like to discuss in more detail, shoot me an email and I'll answer any questions I can.