Tricks Multi Hack Facebook Account | A Browser for Multiple Accounts

Of course your inconvenience, if of you have a facebook account has more than one?? You can not access your account at the same time in a browser. You need to back and forth Sign in, sign-Out and sign in again LOL,
So how do we be able to access many accounts in the same browser at the same time?? Of course we need an additional way. Yes, We need add-on. This addon named CookiePie. With Add-on CookiePie we can open more than a few facebook account. Even from the info I can, with this trick also works for other purposes, such as email yahoo, gmail, hotmail, etc..

Immediately, how do I open a facebook account for more than one (Multi Account).
Keep in mind, I am using firefox browser.
The first step is to install the addon CookiePie on Mozilla firefox. For install GO to Install Add-on CookiePieInstall Addon CookiePie

Search and Click Install Extention
After Install process is complete, restart Firefox by pressing the restart button Fireox.

Then we try to open a facebook account "A",
We login with USER "A".

Then Open in new tab, switch on the tab CookiePie addon. See picture below.
Right click on the way firefox tab, click the toggle ON / OFF CookiePie

CookiePie Add-on tab has been active in it, now you can login new account (B), and do the above steps if you want to login Account (C) or more facebook account again.