I think the other two responses to this comment are spot-on. Lots of corporate intranets and internal applications are IE-only by default. It's certainly not ju

I think the other two responses to this comment are spot-on. Lots of corporate intranets and internal applications are IE-only by default. It's certainly not justifiable from a cost standpoint to rewrite those. Aside from corporate users, individual consumers who aren't necessarily computer-savvy (like my parents) don't have the knowledge (or desire) to download additional software and install extensions, plug-ins, etc. They go with the default browser of their O/S.