OneDrive, Microsoft's file sync app formerly known as SkyDrive, lets you store your files online, edit Office documents in the free Office Web Apps, and easily access your online files from your PC.
Send project reviewers the name and link of each new document.
Your reviewers get an email when a file lands in your shared review folder, with its name and a link they can open.
Mark each new proof ready for review or list the missing details.
See whether a newly filed proof has what a reviewer needs, with missing details listed on its library entry.