A Microsoft file hosting and synchronization service.
Solved
After trying everything I could find to stop Word 2013 (Home-Office click to run)from 'uploading to OneDrive' within Word, and crashing; having word think it was saving to a (local) network folder solved all problems for the single user that had no use for sharepoint. Note: the OneDrive folder must be behind the users folder (a Microsoft default).
Solution: in the options for word, change the default local save path (and save to this UNC path) i.e. '\WorkPC\users\scott\onedrive\documents' ('\WorkPC\users' ... - network path was the default sytem created UNC path for this machine and user (discovery is turned on) (NOTE: use your computer name for "workpc" and the correct user name and path to the documents folder for the profile wanting to save directly to the local onedrive folder....
Office Upload Center does not allow syncing a network UNC path (local network location), so it does nothing (finally kinda disabled), and OneDrive in Windows 8.1 sees the change on the local machine and syncs.