Firefox Tip: Open Multiple Gmail Accounts (OR Anyother Account) Simultaneously in Firefox

Although you can always use Google Chrome to open multiple instances of gmail at a time and you can always use my tiny trick to log into multiple instances of gtalk but if you are firefox crazy then you will surely want to open multiple instances of gmail from your firefox browser itself.

All you need to do after installing this freeware extension is to toggle CookiePie for a tab on which you want to open new instance of Gmail or any other mail. A small cookie sign will show up on that tab and then you are all set to open another instance of your gmail account or any other account in firefox without any problems.

I guess, this is by the easiest way to open multiple instances of any account like facebook etc. at a time as per our comfort without troubling firefox.