[rabidgnat]

I lightly approve of anecdotal posts like these. Facebook controls all of the data needed to make informed decisions, and they're not going to share if the OP's claims are accurate. Lots of bad press about CPM and cost/click will force Facebook to publish data proving the worth of getting Facebook ads that transcend the 'case study' nonsense. If they continually ignore lots of bad press, that's a big tell that the only party that benefits is Facebook, even though it's not a smoking gun.

I've taken this approach with PayPal. I'd use them for person-to-person finances, but I've heard so many small-business horror stories that I'd invest the time to make a merchant account if I made a startup. It's not exactly scientific, but PayPal's not exactly flooding the market with data either

[ErrantX]

I agree for the most part. The only problem I see in this post is that it mentions one specific form of ad (and one example) and then vaguely expands it to cover all forms.

It should be immediately obvious that the specific example mentioned is going to have a very poor ROI. Who sells on Facebook?

[mixmax]

Excellent point.