WHY IS MITTEN$ SO SHY ABOUT HIS TAXES?

(h/t ql at Atrios)
Joshua Holland at The Smirking Chimp goes over 10 current guesses:

1. Mormon Tithes
2. Things That Might Infuriate the Base
3. Harry Reid, Lazy Blogger
4. It's the IRAs
5. The Mini-Mitts
6. Is It All About 2009?
7. CEO, President and Chairman of Bain
8. Is Mitt a Felon?
9. Are There Other Non-Disclosures?
10. There's Nothing – It's Just His Sense of Entitlement

Mitten$ is most likely NOT a felon but I do think most Americans would be shocked at the legal tax scams he used.