How to make multiple homepage in Firefox

We all love Firefox and most of us are using Firefox. The reason I love most is because of Adblockplus plugin. I have got many websites that I want to make my homepage. One of my workmate teaches me how to do it.

It's very easy.

Go to Tools-->>Options-->>Main
Type all the web addresses you want separated by |
For example : www.google.com|www.bridgetonova.com|www.yahoo.com

Every time I start Firefox, it open three tabs automatically with three of my favorite web sites open. I love Firefox.