Woah! I completely and entirely forgot the term "forever frame" existed.
Another term you don't see too often these days is the "holy grail" layout. I definitely remember the days of messing with negative margins and clearfix to get my page layouts to look nice while still working in IE 6 :)
I think you're right that Comet refers more to the JavaScript techniques that came from those "forever frames".. but to me it was all about the streaming HTTP hack at the heart of it.
I guess it's academic now :-)
Regarding holy grail layout and IE6.. so you're telling me you're a masochist!
Another term you don't see too often these days is the "holy grail" layout. I definitely remember the days of messing with negative margins and clearfix to get my page layouts to look nice while still working in IE 6 :)