Just like on TV and radio, political ads on Facebook will now show you who's paying for them.

Facebook announced it wanted to regain users' trust when critics bashed the social media site for widespread propaganda and "fake news" during the 2016 presidential election. Facebook was knocked again when people learned the British firm Cambridge Analytica obtained their private data.

The effort to remain transparent now includes showing more information about sponsored posts, including those from political campaigns.

Facebook says it will verify the identities and locations of all advertisers on both that website and its sister-site, Instagram.

If an ad's approved, it will show the name of the person or organization that paid for it. People can then click on the ad to find out how much the organization spent and how many people saw it.

Facebook users can also go searching for ads related to a topic or candidate.

The ad library is available through Facebook.com, and it looks like this:

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Screenshot of Facebook ad search

Type in any topic of your choice. We searched "Colorado teachers," for example, and found ads from "Polis for Colorado," "Bri for Colorado," "Colorado Values Project," and more.

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Screenshot

We clicked on one from Colorado Values Project to see they spent up to about $500 on the ad, and it's mostly been seen by women ages 35-44.

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Screenshot

Click here if you want to test it out for yourself.