Dropbox
You, and not Dropbox, are responsible for maintaining and protecting all of your stuff. Dropbox will not be liable for any loss or corruption of your stuff, or for any costs or expenses associated with backing up or restoring any of your stuff.
Box
Box is in no way liable for loss of customer data. Under no circumstances will Box be held accountable for any loss of customer data. By becoming a Box user you, the customer, acknowledge that you forfeit the right to hold Box accountable for any and all technical errors, including loss of user files (customer data).
Rapidshare
The user is responsible for the backing up (to his own computer or other devices) of the files that he stores or accesses on RapidShare’s servers. RapidShare does not guarantee or warrant that any content that the user saves, stores or accesses through the service will not be subject to inadvertent damage, corruption or loss.
Google Docs
…YOU EXPRESSLY UNDERSTAND AND AGREE THAT GOOGLE, ITS SUBSIDIARIES AND AFFILIATES, AND ITS LICENSORS SHALL NOT BE LIABLE TO YOU FOR:
A) ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL CONSEQUENTIAL OR EXEMPLARY DAMAGES WHICH MAY BE INCURRED BY YOU, HOWEVER CAUSED AND UNDER ANY THEORY OF LIABILITY.. THIS SHALL INCLUDE, BUT NOT BE LIMITED TO, ANY LOSS OF PROFIT (WHETHER INCURRED DIRECTLY OR INDIRECTLY), ANY LOSS OF GOODWILL OR BUSINESS REPUTATION, ANY LOSS OF DATA SUFFERED, COST OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR OTHER INTANGIBLE LOSS;
(B) ANY LOSS OR DAMAGE WHICH MAY BE INCURRED BY YOU, INCLUDING BUT NOT LIMITED TO LOSS OR DAMAGE AS A RESULT OF:
…
(III) THE DELETION OF, CORRUPTION OF, OR FAILURE TO STORE, ANY CONTENT AND OTHER COMMUNICATIONS DATA MAINTAINED OR TRANSMITTED BY OR THROUGH YOUR USE OF THE SERVICES
…THE LIMITATIONS ON GOOGLE’S LIABILITY TO YOU IN PARAGRAPH 15.1 ABOVE SHALL APPLY WHETHER OR NOT GOOGLE HAS BEEN ADVISED OF OR SHOULD HAVE BEEN AWARE OF THE POSSIBILITY OF ANY SUCH LOSSES ARISING.
Amazon Cloud Drive
We do not guarantee that Your Files will not be subject to misappropriation, loss or damage and we will not be liable if they are. You’re responsible for maintaining appropriate security, protection and backup of Your Files.
Microsoft SkyDrive
You’re responsible for backing up the data that you store on the service. If your service is suspended or canceled, we may permanently delete your data from our servers. We have no obligation to return data to you after the service is suspended or canceled. If data is stored with an expiration date, we may also delete the data as of that date. Data that is deleted may be irretrievable.
Tmilinovic's Blog 