We've been using Dropbox for business for a couple years and love this service for our 8 users. It has allowed all of our employees to share files and access their files from any computer in the office or from home... easily. It also gives an extra benefit of an off-site file back-up. I think the reason I like it the most, however, is that we can still use the file folders and documents on our computers and we are not working with an online file folder or doc. That makes it WAY faster to open up a file, save it, etc. My only complaint is that we do have some quirky "conflicted copy" issues at times.