The United States Court of Appeals (Seven Circuit) has ruled it is now legal for police to search cell phones without a warrant. This stems from a case in Indiana. From the video below, you will see a similar ruling by the Supreme Court of California.
Cloud Computing stores your personal data on a remote database (not your personal computer or smart phone). The following companies are investing billions into Cloud Computing: Apple iCloud, Amazon Cloud Drive, Box, Dropbox, Google Cloud (Google Play), IBM Smart Cloud, Microsoft Cloud (Windows 8 with SkyDrive), and Rackspace.