RPM per 1,000 words: the content-ROI metric

RPM per 1,000 words: the content-ROI metric
Length doesn't monetize linearly. Past a point you add words, not ad slots or intent.

— 600 words: $/1k-words-published $14.20 ▮▮▮▮▮▮▮▮
— 1,200 words: $11.80 ▮▮▮▮▮▮▮
— 2,000 words: $8.90 ▮▮▮▮▮
— 3,500 words: $5.40 ▮▮▮ (scroll depth dies past 60%)

n=140 articles, 28d, normalized by word count. In-content ads below 60% scroll-depth barely render; long pieces dilute revenue-per-word even if total RPM ticks up.

So what: match length to query intent, not word counters. 1,200-1,500 words is the monetization sweet spot for most info queries. 600→3,500w: $/word ▼ -62%