Dropbox is a simple file synchronization tool provided by Dropbox Inc. It uses Amazon's S3 storage system to store photos, videos and files. Dropbox also uses SSL transfers for synchronization and it stores the data via AES-256 encryption. It allows you to upload files manually through the Dropbox website. Dropbox supports file sharing and synchronization along with personal storage.
You can install PicBackMan's Dropbox uploader for Mac from the website and start backing up photos and videos.