I think that a concern tag and quality tag should be added. This question (Windows 8 and Ubuntu Dual-boot: Many duplicates) could use these tags as well as many other meta questions.
Tag uses and definitions:
Concern: This tag is for questions that are asking about a concern for Ask Ubuntu. Users concerned about specific issues may use this tag.
Quality: This tag indicates a question about question, answer, comment, or Stack Exchange quality. Users asking questions about improving their questions may use this tag.