As someone who relies on quite low (& expensive) data limits on a mobile network as a recent subscriber to OneDrive I am cautious as to when I sync files between 2 laptop & 2 desktop computers. The first issue is to get about 100gb of data up in the cloud which will take a few months for me. This is pretty straight forward- I know the file sizes so keeping within my data allowance is ok. It is the ongoing file management (read file transfers) that is proving more difficult to predict. Do you have a resource to help people who want to use OneDrive that done have access to high speed/high data allowances who don't need to pay any attention to this issue. How can I manage the use of OneDrive so to minimise data transfer. For example: how mindful do I need to be with moving a file to a different folder. If for instance I have a synced 500mb video file that I simply drag and drop it into another folder does OneDrive simply move it on the cloud folder (very little data usage) or would OneDrive delete it from its original location then upload the 500mb file to it's new folder location? Then of course there is data cost to my other 3 computers to effect this change. Would this simple movement of this file cost me o few mb's or a couple of gb's of data. Any advice you can give on how OneDrive uses data in syncing data with the view as to how to get the most out of it using data as frugally as possible would be most appreciated. Thanks.