Classifying User Generated Content

User Generated Content (UGС) is a very popular theme. All related aspects are very interesting: SEO - UGС, SMO - UGС, but question is hanging in the air - what classification rules we can use. Below are some proposals.

• 1. Volume / Scale
• 2. Publicness / Privacy
• 3. Frequency
    How often content created?
• 4. Reach
    Defines the size of the audience impacted by the UGC.
• 5. Purpose
    a) Commercial - with the eventual objective of generating interest in selling a product or service;
    b) Social - intended to connect to other users for the purposes of establishing or fulfilling a relationship with them;
    c) Transformational - containing information or ideas intended to educate, inform or influence the readership.
• 6. Validity
    a) The credibility of the content generator established through reputation, tone, qualifications, or depth of research
    b) The quality and accuracy of the content
    c) The appropriateness of the content to the audience that receives it, does it answer their needs?
• 7. Medium
• 8. Message
    How user generated message correlates to auditory from the point of Sociology. The Purpose is pragmatics. Message is semantics.
• 9. Tone - negative, neutral, positive
• 10. Cites - adopted quotations, references to the extraneous resources

As a SEO Freelancer I look forward to find anything promising of UGС metrics.