[rpearl]

With tree-style tabs (a fantastic Firefox extension) opening large amounts of tabs becomes more common because you can manage different lines of thought, and everything else sort of collapses down. I commonly have about 100 tabs open.

[Que]

I could understand a tree-style view to help categorize, I will have to check that out as it sounds very nice.

I was asking from a perspective of standard tabbed browsing that doesn't have a form of organization like this; IMHO under such circumstance so many tabs would be unmanageable or confusing at very best.