Well, you could certainly refuse to give export-controlled encryption
code to folks who don't put in their DNS where they are and such. The
fact that it's not ubiquitous doesn't mean it's useless.
> Sure, if I found a user accessing my site from *.sa (Saudi Arabia) I
> might not want to let them access my alt.sex.stories archive, but would I
> know whether to let in 196.1.3.1? Howbout saudi-oil.com?
No, you wouldn't know. In which case, you're in exactly the same
situation you're in now. :-) --Darren