I like this idea better than asking people how many hours they spend on the web because people are terrible at estimating their time usage, but you probably want to also ask people which browser they use: when I switched from Firefox to Chrome, the average number of tabs I have open dropped manyfold because Firefox has a bug that sometimes causes annoying delays when the back button or the history menu is used. The bug conditions Firefox users to open a new tab whenever he or she suspects he or she might need to refer again to the current page. In my case the conditioning was unconscious: I became aware of the bug only after years of using Firefox and years of being in the habit of opening a lot of new tabs.
I like this idea better than asking people how many hours they spend on the web because people are terrible at estimating their time usage, but you probably want to also ask people which browser they use: when I switched from Firefox to Chrome, the average number of tabs I have open dropped manyfold because Firefox has a bug that sometimes causes annoying delays when the back button or the history menu is used. The bug conditions Firefox users to open a new tab whenever he or she suspects he or she might need to refer again to the current page. In my case the conditioning was unconscious: I became aware of the bug only after years of using Firefox and years of being in the habit of opening a lot of new tabs.