[adamzochowski]

Plenty corporates had IE only/first policy. This meant everything intranet had to work on IE. A website developed for chrome was allowed to request chrome frame, but it had to undo itself for any external links when linking to other intranet sites (plenty active-x / silverlight).

I wish there was an option to specify per website domain which browser to use.

[nikhilgk]

And more importantly, as I recall, you could install chrome frame without admin access.