Everyone likes to say that "too much of a good thing can be bad". I agree, for the most part. The part I disagree with, is in the case of free cloud storage. I call myself a "cloud whore" because I have numerous free accounts for cloud storage with lots of different providers. Dropbox, Box (used to be called Box.net), Copy, Google Drive, Cubby, Mega, SugarSync, and Tresorit all come to mind. In total I probably have around 250GB of free cloud storage right now, thanks to multiple promotions I've taken advantage of from these sites.
I've heard people tell me that pretty much anything free you get online will be mining your data and selling it. My dad always told me that anything you put up online, you're publishing to the world. He's right in most cases, but I also feel he's a bit paranoid. Personally, I don't have much that's super confidential that I host on cloud storage - school essays, notes, photos, minimal amounts of music and installer backups.
So Why do I bother putting my information into all these sites, knowing they will likely be snooping and selling it? My question is, why not? For my personal use, I don't have sensitive information I store; any credit card numbers or otherwise identity crisis-prone information I keep to myself. My way of looking at it, then, is why not use them for non-sensitive data? My entire identity will not be compromised if one of these vendors decides to sell my To-Do.txt file or my album art backups. Moreover, these make it very easy to share files - just today, I used Google Docs to create a shared document of move lists for a site I'm working on with my Jiu-Jitsu instructor, so that either one of us can edit it at our convenience and it will be automatically updated on the actual web page it's embedded in.
The final deciding factor for why I leave my trust in cloud storage is, I've lost over 3 terabytes of physical storage. Note, this was not with any solid-state drives (I'm too poor for those), but rather with mostly Seagate drives, and mostly used drives. So my advice is, don't buy from Seagate, and don't buy used hard drives. Unless you want to have my same experience and witness the destruction of the Death Star I and II (two aptly-named hard drives which died for me... REBEL SCUM!).
Image courtesy of starwars.wikia.com.