Low Cost Per Click
Cost per click is a poor metric for finding your best ad. Instead of focusing on cost per click as your first metric for an ad, start measuring a custom conversion with your pixel and measure ads based on return on investment.
Hyper-Targeting Based on Assumptions
Sure, the allure of Facebook marketing is that there are hyper specific targeting, but when you get wrapped up into you can actually lose money. Start with one solid interest and move from there. Don’t just guess immediately at hyper specific interests just because a blog told you to.