Dropbox has made it incredibly easy to share files. You can now share files and entire folders with DropBox AND non-Dropbox users, simply by sending them a link. They can then view or even download the file, but not edit or delete it. So for example, you have a movie file that is 500meg, you upload it to Dropbox, create a link, then email that link to someone. They can then view the movie, or download it. And its all very simple.
Watch the video for more information. If you want to sign up for Dropbox and also help me earn more space, click here.