They are helpful, but mine tends to have trouble with the MP3s if I put too large a non-MP3 file on it for some reason. Though that may be because I cheaped out on the MP3 player and splurged on the thumbdrive.
Regarding google docs, how secure is it? I'm getting so I want several versions of backup, and I've never dared to email the whole MS to myself since my somebody explained what 'sniffing packets' was, and showed me a draft script sent to Ballywood that he intercepted.....brrr. Not that I believe my glorious masterpiece is on anybody's hotlist.

And I trust google, but I know nothing about internet security.
-then again, I suppose I'll have to get used to the concept of emailing my MS if fate is good and anybody asks for it that way...
sigh.