Over the next week or so, I’m intending to post my findings of a variety of online backup services. I’ve tested:
SquirrelSave (note: I work for the company that runs it and am it’s primary support)
Jungledisk
Mozy Home
Mozy Pro
SugarSync
Humyo
Backblaze
Dropbox
I run both Windows 7 and Mac OS X (Snow Leopard), and have attempted try both platform where offered. My findings may surprise you, and I still advocate that you beg, borrow or buy a portable USB hard drive at the very least to store a copy of your data locally or invest in a Blu-Ray writable drive (they’re becoming cheaper slowly but surely) and doing the same.

Will be very interested to see your findings, be good to see alternative ways to connect to each service WebDAV, FTP etc…