If backblaze backs up my dropbox folder and this dropbox bug affects my files that are getting backedup, if I don't catch the 0 byte files within the 4 week backblaze revision window, won't I still lose my files?

Crashplan hangs on to deleted files for quite some time. I just used it last weekend to recover some stuff I'd deleted about a year ago and realized I wanted back. I was pleasantly surprised to find them still in the system.

It has a lot of options for retaining old versions, too: http://support.crashplan.com/doku.php/reference/version_rete...

Yep. And your wife will divorce you.