Too Theoretical?

Are some WAI guidelines too theoretical?

Typical Problems

13.2 Provide metadata to add semantic information to pages and sites. [Priority 2]

For example, use RDF ([RDF]) to indicate the document's author, the type of content, etc.

Some questions

• How many use RDF today?
• Isn't RDF an unproven technology which is currently of research interest?
• Isn't this using WAI as a mechanism to promote a favoured W3C format?
• If I can't / won't do this, will other
  Priority 2 requirements be ignored?

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