Simple, secure sharing from anywhere.
Here is one of those services that I use all the time but it has become so much a part of my day to day things that I do it has fallen into the same area as email, web and search.
Box.com is a file sharing and file storage service allowing me to store, share and access files from anywhere. It is also a great way to send large files to other people without having to deal with the limitations some email servers put on attachment sizes.
This service works with PC, Mac, IOS, Android, Blackberry and can even be accessed from a Linux computer. Getting started is easy with 5GB of free storage for personal use but that is just the beginning as BOX.com works with other apps like CloudOn, iAnnotate, Autocad, Gmail and Zoho.