When viewing an advertisement what questions should be asked?

1. who or what is the source/author/creator of this information?

2. what qualifications or credentials does the person OR group have?

3. is the information up to date?

4. what is the purpose of the information: to educate, to entertain, or to persuade you to buy something?

5. is there a contact place?

Who or what is the source/author/creator of this information?

What is the purpose of the information.