If you’ve been running Facebook ads as long as Molly Pittman and Ralph Burns, you know just how much the platform and strategies have changed over the years. And if you have been listening to Perpetual Traffic, the weekly paid traffic podcast produced by DigitalMarketer, for the last 4 years, then you would also be in the know. Because Perpetual Traffic now has *gasp* 200 episodes on the subject! Ralph and Molly have been informing their listeners about the happenings at the forefront of…