People were bragging about 10% CTR - amazing !
I decided to give it a try and collected 20,000 UIDs. I used an existing ad that was already running successfully (Like a page). I ran the same ad on the custom audience that was interested in exactly the same subject as in my page.
The results were a complete disappointment: .0001% CTR. I hardly got any clicks.
My theory is that it doesn't matter how targeted is your audience - some people are not going to click on any ad - they are just ad blind.
Am I right ? Am I missing something ? I am awaiting a reply from the FB gurus. Thanks