I use SpiderOak to back up two directories on my Linux box: /etc and /home/jon.
Using Disk Usage Analyzer, I identified the following directories as consuming lots of space and not needing to be backed up, so I excluded them from the backup: .cache, .local, .mozilla, .opera, .SpiderOak, .Downloads
The instructions for removing the wiper blade from the wiper arm are a bit confusing; the following may be clearer:
1. Stand the wiper arm up 2. Push down on the tab 3. Disengage the wiper blade by pushing it toward the car. Note that the tab is part of the wiper blade, not part of the wiper arm.