This is an old trick and thought of sharing. Do you ever need to open multiple pages each time you start your browser? I do. I need twitter+facebook+ some project pages+ engadget :D If its yes for you then this should help.
Opening multiple pages on Firefox
Open Firefox --> General --> Homepage Box --> Enter multiple URLs with PIPEs within. Thats it ;)
For chrome its out of box. But in case if you have not noticed you can do the following. Open chrome --> Go to Preferences --> Select Open the following pages from on Startup --> Add your pages. Thats it. Cheers!