From day one I had one problem with Dropbox:
If I use it to save all my personal data then just a small bug in their system or a criminal employee could gain access to all of my Data...

My data isn't this sensitive, but you know, it just feels bad...

But I just found (via http://alternativeto.net/) a new application that will fill this gap: SpiderOak

They say "Engineering Matters" and created a system that has truly zero-knowledge of your data. Just great! (For more info just go to their site...)

Another thing that SpiderOak does better than Dropbox is that you can backup/sync any folder, not just those under your "My Dropbox" folder...
And you can share whole folders.

The only thing that I now use Dropbox for is fast publishing of single files. Just dropping something into your public folder and then right click -> "copy public link" is really nice thing, but I guess it's just a matter of time until SpiderOak has this, too :)

PS: Another reason why I like this company, is because they gave a whole 50GB for free, because I helped them a little bit :)

PPS: This is my first post with Windows Live Writer, let's see if this works...
Edit: Well special characters have problems...

Copy Public Link for SpiderOak: I created something