The ethical implications of cloud computing have yet to be incorporated into the Model Rules of Professional Conduct and beyond, but Slaw gives you some food for thought just in case (ahem) you failed to read all of the terms and conditions of iCloud carefully. Just for example, the authors point out:
One interesting item is “The Find My iPhone and Find My Mac features are intended for your personal use only.” Does that mean you cannot use the features in a commercial setting? Probably not, but it’s not very clear.
"Have Attorneys Read the iCloud Terms and Conditions?" by Sharon Nelson and John Simek.
