How to get multiple rows on Firefox

Getting multiple rows of tabs is really an efficient way for multi-tasking and cross-checking for intensive use of the browser.

Here's how to do it:

1. Install Tab Mix Plus
https://addons.mozilla.org/en-US/firefox/addon/tab-mix-plus/

2. Restart and enable the it
3. Menu -> Preferences -> Tab Mix Plus Options -> Display -> When Tabs don't fit width -> Multiple Rows

That's it.