Right now I've got five browser windows up with about 30 tabs apiece... Most of the tabs i don't HAVE to have up, but my usual pattern is open app i'm working on, open some documentation, open up another app tab for a different scenario, remember some other docs I need, go to HN and open 8 tabs of stories I want to read over the next hour, open a debugger window on the first tab, open a doc window on emacs to figure out how to do some thing i used to know how to do in vim really easily, then i get a question from a client and switch over to another window with 22 tabs worth of their stuff in it to find the answer... then i go back to the first window and remember that documentation i was reading... after a full day of this stuff, yes, i've got a couple hundred tabs open. its a little obscene but its been working for me for a good 10 years now.