[liberationtech] Choice of Secure Cloud Backup Method or Provider?

[anonymous2013 at nym.hush.com]

Hi,

I was wondering what the group's thoughts are on methods or choice 
of secure cloud backup. I mean SpiderOak got the Snowden seal of 
approval but using it's web interface or app obviously means 
sending them your keys and thus opening up a weakness. Similarly 
TrueCrypt containers on a Dropbox or Google Drive seems weak and 
impractical. AxCrypt then a cloud provider might work. Does anyone 
else have any thoughts or models which work quite well (for the 
average user)?

-A