Who needs Dropbox when Windows 8 has SkyDrive?
23.05.12
Third-party application developers will also have the option to save files to the user's SkyDrive instead of locally, sort of like the way certain Android and iOS content creation apps have the option to save to Dropbox, Box, SugarSync, or other third-party cloud storage services.
An early version of the SkyDrive Windows 8 app will be bundled with the Windows 8 Consumer Preview.

The desktop application will integrate the user's SkyDrive into their Windows Vista, 7, or 8 Windows Explorer. With the application installed, users will be able to drag and drop files up to 2GB in size for direct upload to their cloud storage. If these files are then changed on the desktop, they will automatically be updated in SkyDrive.
Finally, the update to SkyDrive.com will add a "Devices" heading that lets users connect to any remote PC to access files that aren't expressly synced to their cloud drive. In order to do this, users will have to provide a second factor of authentication in the form of a code that is send to the user's mobile phone or alternate email address.
Source: BetaNews