I've read the previous posts relating to this and just wanted to check I understood correctly. My primary AppleID is my my work email address. I also have a mobileme account. When signing up for iCloud, if I don't use my mobileme account I'll lose that, right? So really I want to use my me.com address as my iCloud address but at the same time keep my non-me.com address as my primary AppleID. Is that possible? What I'm not clear is should I sign up to iCloud twice, once to transition my me.com address and once for my primary AppleID? This looks like it's the answer to the first part..? If I use different accounts for iTunes and MobileMe, can I merge them into a single account and use it with iCloud? No. You cannot merge two accounts into one. However, you will be able to move your MobileMe account (firstname.lastname@example.org) to iCloud and, if you choose, you can continue to use a different iTunes account for store purchases and iTunes in the Cloud.