What do the ratings mean?

The SIFT score information provided to the user is sourced from MBFC’s methodology. For ReSIFT, the app mainly utilizes MBFC's "Factual Reporting" and "Bias Rating" that describe the validity of media publishers from a neutral perspective. The Factual Reporting rating is presented on ReSIFT as a text indicator ranging from low credibility to high credibility. The Bias rating is presented as text on a scale of Left, Left Center, Center, Right, Right Center, Conspiracy, Fake News, Pro Science, and Satire. (For more detailed information about MBFC’s methodology, please click here

What does it mean for a source to be "highly credible"?

Although there is ultimately no true scientific formula that is 100% objective when determining bias or credibility, the ratings that ReSIFT utilizes MBFC's careful methodology of determinig the degree of bias for each source and the factual reporting of news from a plethora of sources. For a source to be highly credible, it must:

  1. Never fail a fact check in news reporting or op-eds
  2. Source to credible information
  3. Makes immediate corrections to incorrect information

The bias rating for a source is determined among four categories:

  1. Biased Wording/Headlines (Does the source use loaded words to convey emotion to sway the user?)
  2. Factual/Sourcing (Does the source report factually and back up claims with well-sources evidence?)
  3. Story Choices (Does the source report news from both sides, or do they only publish one side?)
  4. Political Affiliation (How strongly does the source endorse a particulat political ideology?)


For each source, a minimum of 10 headlines are reviewed and a minimum of 5 news stories are manually reviewed by the MBFC staff to determine source ratings. MBFC calculates their scores on a 10 point scale between a source's Factual Reporting rating, Bias rating, and Traffic/Longevity.