The content following each tag should be no longer than 200 characters. Make sure the last tag includes a tag. If not, be skeptical. They usually mean the opposite of what they say. If the message seems geared more to persuade than to inform, be suspicious.
Hoaxers are out to push emotional buttons.
If the message purports to give you extremely important information that you've never heard of before or seen elsewhere in legitimate sources, be suspicious. Read carefully and think critically about what the message says, looking for logical inconsistencies, violations of common sense and obviously false claims. Check for references to outside sources. Hoaxes will not typically name any, nor link to Websites with corroborating information. The content following each tag should be no longer than 200 characters.