As a web developer, the easiest thing for me to develop on my mac was to work from /Library/WebServer/Documents, which is the default directory for OS X’s apache. There are two problems with this: First, the permissions are all root. I found it easiest to change Documents’ owner to my user, but then running a permissions repair would automatically change these back. Second, Backblaze automatically excludes your /Library directory, so none of my web work was getting automatically backed up. I contacted backblaze about including only this directory and got this response:

I am sorry but there is not a way to back up this data.
Backblaze does not back up the system files or the system library. The /Library and all subdirectories are excluded.

My solution was to create a new directory, webdocs, in my home folder, and to move everything that was in /Library/WebServer/Documents into it. Then, I edited /etc/apache2/httpd.conf with root privileges (in terminal: sudo nano /etc/apache2/httpd.conf or sudo edit /etc/apache2/httpd.conf or sudo subl /etc/apache2/httpd.conf depending on your text editor of choice), and replaced all instances of /Library/WebServer/Documents with /Users/jordan/webdocs. Then I ran sudo apachectl restart to restart apache. Now all of my web work will get backed up automatically by backblaze.