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.
Mega - Secure File Storage and collaboration
Dropbox - Online Sync and File Sharing
Userscloud - Userscloud is a free cloud service that offers unlimited online storage, remote backup capacity, fast uploading, and downloading tools.
Google Drive - Access and sync your files anywhere
Subyshare - Subyshare.
Uptobox - Uptobox is a file hosting provider offering online storage/remote backup capacity, sophisticated...