No, they aren't. I don't know about you, but I can't have more than 20 tabs open and consciously be aware of the content. I can't think of people like above, having 120 tabs. It's probably a waste of time and resources. First because you can't possibly hold in your memory 120 tabs, thus you'll have to visit them or read the title to remind you why is it there on the first place. With bookmarks at least you can use the search bar...

So it ends up being counterproductive.

Naw, at least with me I seem to be able to by treating the tab ordering as a conceptual discovery ordering. That is, I remember what things I learned / researched prior to and following each tab. It's lossy, but because each has a unique relationship with its surrounding concepts there's plenty of opportunities for parity-like behaviour; redundancy.

When researching a thing I'll open up some high level page about it, then do breadth-first searches of tab contents, opening up new tabs whenever I see something that looks interesting, has wider implications, or possibly has some weaker relationship to a thing with one or both of those properties and I think I might be able to traverse the concept graph this way to find it / them.

So I end up with a sort of flat tree where it corresponds almost directly to my earlier thought graph which produced them. I can work with maybe 200 this way... But not more. Unless I open them in different windows - sometimes different browsers, actually, to help further differentiate/compartmentalise them (eg. I'll use this strategy for largely disparate topics). Then, well, I'm not sure where I top out, all I can say is I once crashed my box from out of memory (not running swap), and it's a 32GB box soooo... I dunno.

There are likely many others that work this way. Perhaps it's not common, but I also feel that it's very unlikely unique!

You gave me an idea to a chrome plugin to manage tabs. I'm gonna open ne some tabs to learn how to write plugins.

I do the same. I also try to organize my bookshelf in the same fashion.

For me session manager sessions (in firefox) are the new bookmarks.

i try to split different fields of interest into separate windows. Then i save that window as a suitably titled session and close the window. If i need to add a new tab to a session, i use the "append to session" feature. That way i dont clutter up my bookmarks or my primary firefox session.