healthcare ad campaign

https://donate.melanoma.org/site/TR/5kRunWalk/MilesforMelanoma?pg=personal&px=1518497&fr_id=2214 https://donate.melanoma.org/site/TR/5kRunWalk/MilesforMelanoma?pg=personal&px=1518502&fr_id=2214 https://www2.archivists.org/governance/handbook/section7/groups/CALM#comment-35723...

I have been testing different traffic sources lately, and I keep coming back to one question: Do Healthcare Popunder Ads still bring solid ROI, or are they outdated now? I see mixed opinions in forums. Some people swear by them, while others say they waste budget. Pain Point My first experience...