Please read the Important Notice on the Tile Tabs WE home page:

https://addons.mozilla.org/en-US/firefox/addon/tile-tabs-we/

Here are some of the reasons why you might want to use Tile Tabs WE:

• To compare multiple web pages side-by-side (e.g. 3 or more pages side-by-side).
• To create staggered layouts (e.g. one page alongside two more pages tiled vertically).
• To open links from one tab in adjacent existing tabs.
• To synchronize scroll multiple web pages side-by-side.
• To save tiled layouts which can be re-opened for future use.