>But the difference is, the user can change resolution and force desktop outlook to use bigger fonts in the tree view if they need them. What you are proposing is forcing the user to always use 100% for everything, and those that need bigger fonts to read the screen are screwed.

The OS includes some very sophisticated way of adapting everything when the resolution changes. Offering such support at the Web site level would be extremely difficult. Yes, the browser offers a zoom functionality. But, in order for advanced application Web sites to be fully supported and react to that requires a lot of work. We tend to rely on the most important things, such as the font, the main content and so on. But, having large fonts in the toolbar, dashboard and the right pane causes some very difficult alignments to control. I do however have to notice that this site offers much more than the average site as far as customized user settings.