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.
Flickr - image and video hosting website
Dropbox - Online Sync and File Sharing
Imgur - Imgur is a free and simple image hosting service with image editing feature. Signup is optional.
Google Drive - Access and sync your files anywhere
Google Photos - All your photos are backed up safely, organized and labeled automatically, so you can find them fast, and share them how you like.
Mega - Secure File Storage and collaboration