Content Site Due Diligence: The 40-Point Checklist Before You Buy

Content site acquisitions fail in predictable ways. Traffic that was not what it seemed. Revenue that evaporated after a Google core update. Backlinks that turned out to be from private blog networks. An AI-generated content percentage the seller did not disclose. Every one of these failure modes is detectable — if you run a thorough due diligence process before signing.

This checklist covers the 40 things experienced buyers verify before any content site acquisition. It is organized by category so you can work through it systematically in your due diligence period (typically 14–21 days after an accepted LOI).

Category 1: Traffic verification (Items 1–10)

1. Request GSC access (read-only) — Verify total clicks and impressions match the seller's reported traffic. Look at the last 16 months to identify trend direction and any update impact.
2. Check GSC for manual actions — Go to Security & Manual Actions. Any manual penalty, even resolved, warrants deep investigation into what caused it.
3. Cross-check with Ahrefs or Semrush — Third-party tools will not match GSC exactly, but large discrepancies (30%+ gap) need explanation. Check organic traffic trend in both tools.
4. Identify traffic-driving content concentration — Use GSC "Pages" report. If more than 20% of total traffic comes from a single URL, flag this as concentration risk.
5. Overlay Google core update dates on traffic chart — Moz tracks these. Any traffic drop that correlates with a core update must be explained by the seller. Was it recovered? When? Why?
6. Verify GA matches GSC — Request Google Analytics read access. Traffic from GA (sessions) and GSC (clicks) should be directionally consistent. Large discrepancies may indicate GA manipulation.
7. Check traffic sources in GA — Organic search should be the dominant source. If a significant % is direct, email, or social, ask why and verify those channels are transferable.
8. Review mobile vs. desktop split — Content sites should be primarily mobile traffic (60%+). If it is skewed heavily desktop, understand why.
9. Check geographic distribution — US, UK, CA, AU traffic commands the highest RPMs and affiliate rates. Sites with predominantly traffic from India or Southeast Asia may have inflated traffic but lower monetization quality.
10. Verify zero paid traffic inflating organics — Check GA acquisition report for any paid search traffic. Some sellers run low-level paid campaigns to keep reported traffic metrics up.

Category 2: Monetization verification (Items 11–18)

11. Request ad network dashboard access — For Mediavine/Raptive/AdThrive sites, request read-only access to the dashboard. Screenshot RPM trends and total earnings for the past 24 months.
12. Cross-check ad earnings vs GA sessions — Calculate implied RPM (revenue per 1,000 sessions). If reported RPM looks anomalously high vs. industry benchmarks for the niche, question the data.
13. Verify affiliate commissions with network exports — Ask for Amazon Associates, ShareASale, Impact, or whichever affiliate networks are used. Request CSV exports directly — not screenshots. Verify amounts match the P&L.
14. Check affiliate commission rate changes — Amazon has cut commission rates multiple times. Review when the primary affiliate relationships were established and whether current rates are reflected in the trailing financials.
15. Identify revenue concentration by source — What % of revenue comes from a single ad network or affiliate partner? Over 60% from one source is a risk.
16. Verify sponsored content or link sale revenue — If any revenue comes from selling sponsored posts or links, understand the volume, clients, and whether this practice violates Google's link scheme guidelines.
17. Check ad network contract transfer terms — Mediavine and Raptive require reapplication on ownership transfer. Confirm the site will qualify under the new owner (some networks require specific traffic minimums or niche approvals).
18. Validate seasonal revenue patterns — Request month-by-month revenue for 24 months. Identify peak months and trough months. Calculate SDE on the trough months to understand worst-case cash flow.

Category 3: Content quality audit (Items 19–26)

19. Assess HCU (Helpful Content Update) risk — Does the content demonstrate first-hand experience and expertise, or is it generic information-gathering? Sites hit by the September 2023 or March 2024 HCU still rank lower than pre-update even if they were not penalized.
20. Estimate AI content percentage — Use Originality.ai or GPTZero on a sample of 20 articles (varied by date). AI content is not automatically penalized, but undisclosed AI content at scale is a red flag for future algorithm exposure.
21. Check byline credibility — Do author bios exist? Do author names have verifiable online presence? Faceless, author-less content sites are higher HCU risk.
22. Review content publication date history — Use Wayback Machine or the CMS to see when content was published vs updated. Sites that mass-published in 2021–2022 and have not updated since are stale.
23. Read the top 20 traffic-driving articles — Actually read them. Do they answer the reader's question well? Would you bookmark them? This is the fastest signal for content quality risk.
24. Check for thin content pages — Use Screaming Frog to crawl the site. Filter for pages under 500 words. A large inventory of thin pages is a liability and may explain why some sections underperform.
25. Assess content update processes — Ask the seller: how often is existing content updated? Who does it? How is it tracked? Sites with documented update schedules are more valuable than ones where updates are ad hoc.
26. Verify no duplicate or scraped content — Use Copyscape spot-checks on 10 articles. Some low-quality sites scrape or lightly spin content from other sources, which creates copyright and ranking risk.

Category 4: Backlink profile (Items 27–32)

27. Run Ahrefs backlink report — Look at referring domains over time. Healthy sites show steady, slow backlink growth. Sudden spikes in referring domains (1,000 new domains in a month) indicate a link scheme.
28. Check for PBN links — Review the top 50 referring domains. Do they have real content, real traffic, and editorial context? Sites with links from exact-match domain networks or obviously thin sites are carrying risk.
29. Identify anchor text distribution — Too many exact-match commercial anchor texts (e.g., "best credit cards 2026" pointing to the site) is a past optimization that creates future devaluation risk.
30. Check for disavow file — Ask the seller if they have ever submitted a disavow file. If yes, request it and understand what was disavowed and why. An existing disavow means the site has a history of problematic links.
31. Verify domain history on Wayback Machine — Check what the domain was before the current site. A domain that was previously used for adult content, pharma spam, or unrelated niches carries residual trust penalties.
32. Assess link velocity post-listing — Has the seller been building links in the last 3 months? Aggressive link building right before listing artificially inflates Domain Rating and keyword rankings that have not yet stabilized.

Category 5: Keyword concentration risk (Items 33–36)

33. Identify top 10 traffic keywords — Use GSC "Queries" report. If the top 10 keywords drive more than 50% of traffic, the site is dangerously concentrated.
34. Check SERP volatility for top keywords — Use Semrush Sensor or MozCast to assess how volatile the rankings are for the site's top keywords. High-volatility niches (finance, health, legal) require stricter editorial standards and are harder to sustain.
35. Identify any YMYL (Your Money or Your Life) content risk — Health and financial topics are held to higher Google quality standards. Sites in these niches need demonstrable authorial expertise, which is hard to hire for post-acquisition.
36. Review keyword ranking trend in Ahrefs — Are the site's keyword rankings trending up, down, or flat? A site with declining rankings across its keyword portfolio is not in recovery — it is in deterioration.

Category 6: Editorial calendar and content velocity (Items 37–40)

37. Review publishing cadence for the last 12 months — How many new articles were published per month? Is it consistent? A site that published 20 articles/month for 18 months and then stopped 6 months ago needs explanation.
38. Understand the content team structure — Is content produced by the owner, freelancers, or an in-house writer? Get the names and agreements for key contributors. Confirm they are willing to continue under new ownership.
39. Assess the content roadmap — Does the seller have a documented keyword research backlog and editorial calendar? A site with an active pipeline is worth more than one where content strategy exists only in the seller's head.
40. Calculate cost per article and content budget — Divide the last 12 months of content spending by articles published. This tells you the real ongoing content cost and whether the existing team is scalable at the implied price per word.

After the checklist: making your decision

No content site will pass all 40 items perfectly. The question is not perfection — it is whether the risks you have identified are priced into the deal. A site with moderate keyword concentration risk at 2.2x is a better buy than the same site at 3.2x. Use the checklist findings to negotiate, not just to walk away.

The best marketplaces for verified content site acquisitions are Empire Flippers (thorough vetting, higher price floor), Motion Invest (smaller sites, faster process), and Flippa (widest selection, lower quality control). For any serious purchase, run your own DD regardless of what the broker has verified.

Content site due diligence is 80% verifying what the seller claims and 20% discovering what they did not mention. Follow this checklist, trust your read-only access over the seller's summaries, and you will avoid the most common and costly mistakes in content site acquisition. Our free analyzer can help you prioritize which items matter most for any specific deal.