Using iCloud at work and privacy What is the best way of using iCloud at work, and retaining privacy?

I have work computer, an iMac. Management requires the login password to be known, so that others can use the computer when I am away. That's fair, they bought it. But I want to use my personal iCloud account.

What's the best way of doing this while retaining privacy? Once I have logged in to iCloud, in System Preferences, it seems like anyone could turn on Bookmarks, Photo Stream etc without even asking for my iCloud login.
Is there anything stopping you from creating a separate user account for others to use in the office?

By explaining that the Mac might expose personal information due to the Apple ID on your user account, they should accept that there's a security risk to you if you allow everyone access on that account.

Alternatively, you could try to remember to sign out of iCloud each time you leave, however that wouldn't delete content stored locally already.