Best for
- Readers checking how a recommendation was made
- Vendors proposing a correction
- Affiliate reviewers evaluating editorial independence
Watch for
- Vendor claims are not independent measurements
- Pricing expires quickly
- Hands-on evidence is labelled only when it exists
Source hierarchy
We prefer official product, help, pricing and policy pages for features and commercial terms. Independent research is used for learning frameworks; user commentary can identify questions but does not prove product facts.
Recommendation logic
Products are matched to target language, level, goal, time, budget and preferred activity. Affiliate availability and commission are excluded from scoring.
Updates and corrections
Material facts carry a visible verification date. Corrections should identify the exact claim and a primary source. A public mailbox will be added after owner verification; until then no contact identity is fabricated.
Decision criteria
01Source quality
02Verification date
03Comparable criteria
04Limitations
05Conflict disclosure
06Correction path