This add on working fine. It will change your home page to rspark.com but there's option to change it to what we want as home page (Tools -> Addons -> Options).

very helpful tool. Open multiple URL just one click. Very good.

Multiple URl opener works perfect. I am enjoying it.

I always use this extension, Awesome

I can open multiple url and it is save my to open this ,
i think it was for me and anyone can use it.
thankyou.

Save my lots of time to open multiple Url.

Works more than expected. Its a great addons.

Spaces in adresses support, simple and VERY USEFUL IF U DON'T WANNA LOOSE TIME!! and for the start tab like the other comment... Just desactivate it in the plug-in menu when you don't need that thing, it takes maybe 4 seconds to you ^_^ !