3. You get five subdomains per fully hosted domain; on CDI you are allowed 3 fully hosted domains, so 3 x 5 = 15.
4. Not sure about this one - there might be legal issues (copyright violation?)
5. Yes, I think so.
6. See #4 and also refer to the Terms of Service document, particularly the 'Lawful Purpose' section.
7. Not sure - does anyone else know? Anyhow, if you get asked for a promotion code, just enter 777 and hope for the best!
All the best,