Headsup,15 GB of free storage.

Their Terms of Service are here https://www.copy.com/about/tos

The bits I have copied below have convinced me that I would not use their 'Service'.

We may also need to share your data, information, files and folders with third parties who assist us in providing the service. You hereby consent to such sharing. In addition, Copy may contain links to third party websites or resources. Your use of the third party materials is governed by their terms and not this Agreement. We are not responsible for or endorse these third parties.
You are responsible for maintaining and protecting your data in Copy and Copy is not responsible for any loss or corruption to your files or information or for backing up such information.

[h=2]Renewals[/h] You agree that Copy shall have the right to automatically and without notice renew your license to continue to use the Products upon expiration of your license period.. You agree that if you elect to not permit Copy the right to automatically renew your license to use the Products or maintain your credit card information on file, then Copy may terminate your license.