Questions on how to use cloud storage?

[acsurfer]

Hello,

1) Is it possible to instantly save to cloud storage like dropbox without saving to the phone first? For example if I take an image or video, it is instantly saved inside dropbox instead of my phone memory.

2) Is it possible to set cloud storage to sync files immediately when I save a file in my phone memory/sd card? For example when I take a picture, it is save to my phone, I also want a copy of the picture in my cloud storage (e.g. dropbox) immediately automatically.

3) What cloud storage is the best?

4) How to do backup using cloud storage?

Thanks