Case: adding a desktop bottom-rail (out-of-page) unit

Case: adding a desktop bottom-rail (out-of-page) unit

What it did: enabled a dismissible bottom-rail anchor on desktop, separate from the sidebar, capped to one per session.

— Setup effort: 1/5 (out-of-page slot)
— RPM lift seen: incremental page RPM +$1.35 (from $16.20 to $17.55, +8.3%) with no cannibalization of other slots
— Viewability 88%; it filled at high CPM because anchor inventory is scarce

Pros: net-new inventory, doesn't move content, easy.
Cons: stacked over the sidebar it felt heavy on 1366px screens; we hid it below 1440px width.

Lift: ★★★★☆ — Risk: ★★☆☆☆
Verdict: free incremental revenue if your desktop layout has the room. Best for: wide desktop content sites. Skip on narrow or already ad-dense layouts.