Make Every Impression Count This Earth Month

Not every ad space on your site will be filled 100% of the time. If you’ve noticed this before, it’s an intentional part of a healthy ad strategy.

In programmatic advertising, fill rate refers to the percentage of ad requests that result in an ad being shown. At Mediavine, we don’t aim for a 100% fill rate, because doing so would mean accepting lower-quality, lower-paying ads that can hurt both your revenue and user experience.

Instead, we prioritize higher-value demand, so occasionally, ad space goes unfilled.

By design, unsold inventory is normal and valuable. And with Mediavine’s Shine PSAs, it can create a meaningful impact for our partnering organizations.

Turning Unfilled Inventory Into Real Impact

Shine PSAs are Mediavine’s way of turning empty ad space into something that matters. When an ad impression goes unsold, we will automatically fill it with campaigns amplifying the mission of the nonprofit organizations you elect to support. Instead of a blank space, your site becomes a platform for causes doing meaningful work in the world. No extra effort required from you.

It’s simple:

• Shine PSAs only run on the occasion when paid ads don’t fill
• Shine PSAs don’t impact your revenue opportunities
• Shine PSAs are easily opted into, directly from your dashboard

After opting in to serving Shine PSAs, no further steps are required. Just a smarter use of inventory that would otherwise go unfilled.

Make An Impact For Earth Month 

For April, in honor of Earth Month and Arbor Day, we’re celebrating our partnership with the Arbor Day Foundation.

The Arbor Day Foundation is a global nonprofit focused on large-scale tree planting and forest restoration, with projects in more than 60 countries. Their work supports ecosystems, communities, and long-term environmental recovery.

This year, the Arbor Day Foundation is leading its Million Trees Project, an initiative to plant 1 million new trees in communities this spring while collecting meaningful tree stories from supporters. Individuals can share a photo and story of a tree they love, and contribute by donating or shopping the nursery.

As a Shine PSA partner, you’re able to select the Arbor Day Foundation, as well as any of our other PSA partnering organizations, and we’ll start filling unsold ad space with their promotional graphics, helping drive awareness and support for initiatives like the Million Trees Project. 

To date, participating Mediavine publishers have collectively donated more than 258 million impressions in support of the Arbor Day Foundation’s mission alone. Ready to be part of that impact? Set up is simple.

How to Get Started 

Opt into Shine PSAs in just a few clicks:

• Head to Settings in the Mediavine dashboard and look for Shine 
• Opt into the Arbor Day Foundation PSA ( and additional causes you may want to support)
• Your unsold inventory will automatically begin serving these campaigns

Once you’ve opted in to supporting the causes that matter most to you, PSAs run in the background and only appear in instances when there is unsold inventory. Shine PSAs ensure every impression counts for something good. This way, unsold inventory is put to work, you’re able to support a cause you’re passionate about, and be part of meaningful initiatives like the reforestation efforts of the Arbor Day Foundation. 

If you’re not already opted in, now’s a great time.

👉 Learn more about Shine PSAs
👉 Discover more about the Arbor Day Foundation

Because with Mediavine, when your inventory works smarter, it doesn’t just earn, it gives back.