Look for evidence that care has been taken to get the facts right. If the author or organization involved here has a reputation to maintain, then it is likely that steps are being taken to insure accuracy.

Ask:
Is there an editor? Peer review (review by professionals in the field)? Does the publication cite its sources so that its information can be verified?

Are there signs of carelessness, such as poor grammar, misspelled words, and typographical errors?

Are facts well organized? For example, are lists, tables, or graphs used? Is coverage of the material sufficiently comprehensive? Beware of quotes and excerpts from other sources that leave out important information.