mentalfloss.com
As of Nov 6, 2026, mentalfloss.com's ads.txt lists 443 seller lines across 97 ad systems, its robots.txt allows GPTBot, OAI-SearchBot, ChatGPT-User, ClaudeBot, and 2 more, and its DMARC policy is none.
Checked daily since Oct 31, 2026. JSON. Link to this check. Run this site? Remove or correct this report.
Checked Nov 6, 2026, 22:32 UTC
| File | Status | What the robot saw | Same since |
|---|---|---|---|
| ads.txt | ADDED | 443 seller lines, 97 ad systems. 2 changes since Nov 6. See the changes | 2026-11-06 |
| app-ads.txt | SUCCESS | 384 seller lines, 77 ad systems. | 2026-11-03, first check |
| sellers.json | NOT_FOUND | Not found. The site answered 404. 64 lines have no matching seller at advertising.com, appnexus.com, freewheel.tv, google.com, and 12 more. Evidence 197 lines not judged: the ad system's sellers.json could not be read. | 2026-11-05, first check |
| robots.txt | SUCCESS | 6 rules for 6 AI crawlers. Allows GPTBot, OAI-SearchBot, ChatGPT-User, ClaudeBot, and 2 more. | 2026-11-06, first check |
| llms.txt | SUCCESS | Published. Title: Mental Floss. | 2026-11-06, first check |
| DMARC | SUCCESS | p=none. Reports on. | 2026-11-06, first check |
| MTA-STS | NOT_FOUND | No MTA-STS record. | 2026-11-06, first check |
| BIMI | NOT_FOUND | No BIMI record. | 2026-11-06, first check |
| security.txt | NOT_FOUND | Not found. The site answered 404. | 2026-11-06, first check |
mentalfloss.com changed its ad sellers on Nov 6. Publisher Watch finds changes like this across 8,118 publishers. One email a day.
See Publisher Watch
These are the site's own public files, as fetched, with the date. The robot reports what is published. It does not judge compliance, approval, or intent. A failed fetch is a failed fetch, never a missing file.
Not checked: anything behind a login, account settings, or private feeds. Whether crawlers obey robots.txt. Business deals: a file line is not a contract.