Search tabs in firefox with %

Here's something I'm using a lot.

If you type % in the location box, you can search among your open tabs.

This is really useful when you've got a lot of open tabs.

So if I want to find that usps tab, just type "%usps" for example, and it will show it in the drop down list.

I discovered this when moving the list all tabs button to the left side of the tabs using customize because it kept on disappearing from the right side of the tabs. When you click on the list all tabs, the second entry is search tabs and it puts a % into the location box.