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.
DelaFil - Share files in an easy way. One, two, three and its Sent! Instructions:
Dropbox - Online Sync and File Sharing
Load.to - Load.to is a 1-click-hoster / sharehoster that hosts your files for FREE!
Google Drive - Access and sync your files anywhere
WeTransfer - WeTransfer is a free service to send big or small files from A to B.
Mega - Secure File Storage and collaboration