How to backup your VPS on dropbox?

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http://serverfault.com – I'm having a VPS which is currently using 10GB storage. Apart from this I have a 50GB dropbox account. I want to use dropbox as a backup for my VPS and there should be automated weekly backups. Is that practically possible? And if it is possible would it be able to take MySQL databases as well in that backup? (HowTos)