Backblaze B2 is a cloud storage service that works similarly as amazon S3 or Microsoft Azure but for 1/4th of the cost. At beta stage it is also throwing in a 10 GB free. The problem is, there is no official client for B2 from backblaze. The web interface lets you upload files but the max file size is 150 MB. You'll have to do things with command line to upload a file larger than that. But cyberduck, a 3rd party client gives you a easy and graphical interface to take advantage of this dirt cheap storage service. Here is how you do it.
If you haven't already singed up for B2, Sign Up From Here
Download the appropriate installer for your platform from Cyberduck Official Website. Install the client.
Authenticating with B2
Open cyberduck. Click on Open Connection
Now go to https://secure.backblaze.com/b2_buckets.htm . Create a bucket if you haven't already. Now click on "Show Account ID and Application Key" . It will show you just the account ID at first. Click on the create application key. It will show you a unique application key.
Now Cyberduck will list all the buckets that you have created.
Now click on a bucket and it'll show you the option to upload files ! Backblaze B2 allows you to upload files with a max file size of 10 TB.