Passwords. We use a lot of passwords because we have lots of accounts. I use LastPass for the majority of my passwords.
LastPass holds all of your passwords and has a team working behind the scenes to make sure no one tries to steal them. If this isn't more reassuring, your passwords are kept under a heavily protected server with top-notch encryption.
I'd say good luck to whoever tries to steal them.
LastPass also has a ton of other really cool features as well! It has a password generator, and can also alert you of vulnerabilities in your passwords. Now to one of my favourite features, the autologin feature, it can automatically login to all of your websites for you!
This is a pretty cool and innovative plugin. It helps google chrome run faster by "suspending" unused tabs. This frees up memory and helps Google Chrome run faster.
You can set it to suspend tabs that haven't run for 1 hour, or 15 minutes, etc. There are lots of other options too, like whitelists, and keyboard shortcuts.
This is especially great if you work with a lot of tabs, and can't really close them. When you are ready to go back, you can just go to the tab and "click to reload tab".