For hosting common files it's ok. Also it is on Android too do, great to transfer files between your Windows and your phone. But if you want better security you have to subscribe a monthly offer.
Xnapper - Take beautiful screenshots instantly
Dropbox - Online Sync and File Sharing
BrandBird - Brand your Twitter content uniquely
Google Drive - Access and sync your files anywhere
Screenzy - A simple screenshot beautifier
Mega - Secure File Storage and collaboration