Case: a second stacked sticky sidebar slot (160x600)

Case: a second stacked sticky sidebar slot (160x600)

What it did: added a 160x600 skyscraper below the existing 300x600 in a sticky sidebar container that scrolls with the article.

— Setup effort: 2/5 (sticky container holding two slots)
— RPM lift seen: incremental page RPM +$1.05 (from $15.40 to $16.45, +6.8%)
— The 160x600 viewed at 74% because the whole container sticks through the long scroll

Pros: more high-viewability inventory on desktop long-reads, content untouched.
Cons: needs article length > sidebar height or the second slot never enters view; only worth it on 1,500-word+ pages. Watch policy on ad-to-content balance.

Lift: ★★★☆☆ — Risk: ★★☆☆☆
Verdict: a modest, safe add for long desktop articles. Best for: long-form with a tall sidebar. Skip on short pages or mobile.