The Ad Library, which was previously called the Ad Archive in the U.S., includes all active ads running on a Facebook page—not just politics or issue ads. The library will now be a central place ...

It uses Facebook's Ad Library – a tool created to allow for better transparency on how companies and people are putting out marketing – to discover discounts that would otherwise not be available.

The ad library also shows ads taken out on the Instagram platform Facebook also owns. But it’s not limited to just political advertising. RELATED: New tactic to hack your Facebook.