[yellowapple]

I do the same thing; it's incredibly easy to do with the Tree View Tabs extension.

For example, while browsing HN, I'll frequently just middle-click a bunch of article links and (occasionally) their comments, then read them once I have a sizable queue. Same goes for trying to look up documentation to fix some bug in my code; I'll start with a DuckDuckGo search and, suddenly, I have at least a dozen (sometimes multiple dozens) tabs open with Stack Overflow questions and blog posts and official online docs and such with clues pointing me in the right direction.

[tonetheman]

What is the name of that extension? I searched and get over a thousand results. Thanks!

[andrewflnr]

"Tree Style Tab". http://piro.sakura.ne.jp/xul/_treestyletab.html.en

At least that's the one I use.

[yellowapple]

Search DuckDuckGo for "Tree Style Tabs"; it should be the first result.

It should also be the first result if you search Mozilla's add-on marketplace thingamajig for "Tree Style Tabs". Here's the link for convenience: https://addons.mozilla.org/en-US/firefox/addon/tree-style-ta...