The myth of more content
Most SEO advice says 'publish more'. For most sites, this is wrong. Sites that publish constantly often have content libraries full of underperforming articles that dilute the site's topical authority, waste crawl budget and bury the high-performers in the navigation. Pruning the underperformers can outperform publishing new content for sites past a certain scale.
What 'underperforming' means
An article is underperforming when, despite being old enough to have established its baseline, it produces fewer than 10 organic visits per month, fewer than 5 backlinks and zero conversions. It's not a content quality judgement — some great articles target topics with no audience. It's a performance judgement: the article isn't earning its keep in your library.
The three options: keep, merge, delete
For every underperformer, you have three options. Keep — if there's strategic reason (brand alignment, internal linking value, future plans). Merge — combine with a stronger article on the same topic, redirecting the underperformer to the merged version. Delete — return 410 and remove from the sitemap, signalling to Google that the URL is intentionally gone.
Merging: the highest-ROI move
Merging is usually the right answer. The strong article gets the additional content depth, the additional internal links, the additional backlinks (via the 301 from the underperformer). The strong article ranks better. The library is cleaner. Both win.
Deletion: when merging isn't possible
If the underperformer doesn't fit into any stronger article, delete it. Return 410 (Gone) rather than 404 (Not Found) — 410 signals intentional removal and Google removes the URL from the index faster. Remove from the sitemap. Remove internal links pointing to it. Clean break.
The audit cadence
Audit your content library annually. Most sites have 30-50% of their content sitting in the underperformer zone. Each pruning round takes weeks and feels uncomfortable — nobody likes deleting content they spent time writing. The rankings boost from the surviving content usually shows up within 60-90 days.
The measurement
Track total organic sessions, average sessions per indexed URL and crawl rate. Pruning should increase average sessions per URL (you've removed the long tail of zero-visit URLs) and increase crawl rate per URL (the crawler has fewer URLs to visit). Total sessions should hold steady or grow as the surviving articles climb.