Are these “Top 10” dumb things or not?

At "10 dumb things users do that can mess up their computers" Debra Littlejohn Shinder brings up some interesting common failings. Lets look at her list, because I have a different take.

#1: Plug into the wall without surge protection
#2: Surf the Internet without a firewall
#3: Neglect to run or update antivirus and anti-spyware programs
#4: Install and uninstall lots of programs, especially betas
#5: Keep disks full and fragmented
#6: Open all attachments
#7: Click on everything
#8: Share and share alike
#9: Pick the wrong passwords
#10: Ignore the need for a backup and recovery plan

Well, they seem interesting, but ...
The big "but" gets back to one of my favourite phrases:

Very simply, in my own context most of this is meaningless. It may well be in yours as well.