No. They'd be removed. The info (bookmarks, contacts, etc) are only on your iCloud and would not be accessible if you logged out.when i got my iphone i set up as new iphone on itunes and then i logged into icloud on the actual phone so that my contacts and bookmarks would show up. Im wondering though if it carries over anything else when i log into icloud. i made sure before my last back up to iCloud that it only backed up contacts and bookmarks nothing with the apps. Im wondering if i sign out of icloud now if the contacts and bookmarks would still stay on the iPhone? or is that all part of the icloud back up?