Noob Question - I wonder if (4)
Hi STM,
Would I get charged for impressions if somebody shares/tags my promoted post to their friends?
Or is that just a bonus?
Cheers 
That's free traffic mate.
Originally Posted by stickupkid
Free - the best.
It also boosts your Quality Score, so if you're running ads that get a lot of engagement FB will reward you with cheaper click prices too!
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