The characteristics of a cloud are not ideally suited to reliable data storage. Clouds are well known to be ephemeral and to change their size, shape and density according to the dictates of the local climate. Furthermore, clouds are much less substantial than they appear and can be blown away by the winds which spring up apparently at random - a whiff of senator's breath/wind can blow away a cloud. Clouds can evaporate and leave one defenseless in the glare of whatever it was that just zapped your cloud... Clouds are out of your control... Clouds do not have long life spans... Clouds become distorted and sometimes appear as fog.... We all know the fates of those with their heads in the clouds... So, don't say you were not warned!