Will FB penalize me in any way for using the same ad (creative/title/copy) for different offers?
I have several offers that are very similar, and I already know what ads work (the ad works for all of the offers, I want to see which one converts the best)
i doubt they will notice,
I would think many of us are guilty of doing that sometimes..
Setting up a link to rotate ads probably will be a better choice in my opinion because if you run all the same ads, even with the same exact offers, you'll still get different impressions and CTRs.