Firefox 3 EULA raises a ruckus

"The predictable outcry followed, mostly because people who are used to free software have a visceral reaction to seeing a click-through EULA. "

On the other hand, the FSF guidance on the GPL contains this advice:

"If the program is interactive, make it output a short notice like this
when it starts in an interactive mode:

Gnomovision version 69, Copyright (C) year name of author
Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.

The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, the commands you use may
be called something other than `show w' and `show c'; they could even be
mouse-clicks or menu items--whatever suits your program."

One of the purposes is presumably to make it clear that users accept that there is a disclaimer of liability in respect of fitness for purpose.