This feature requires two steps one on Facebook side and one on Open Classifieds side:
Facebook side
(might change depending on Facebook!)
1. First you need to log in to Facebook and go to https://developers.facebook.com
2. Click on Apps (register as a developer if you haven’t already)
3. Click on New App and name it whatever you want
4. Copy the App ID that shows up after creation
Open Classifieds side
1. Log in to your OC admin panel
2. Go to Settings > Advertisement > Advertisement Display Options
3. Enter the Facebook App ID into the Facebook comments box
4. Press Save!
Now you have fully functional facebook comments on your ads.
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