For a multi-lingual (really multi-char-set, "multi-graphic"?) user
who often visits sites in several different char-sets, and might
have a 60/30/5/5 percentage distribution, getting an "are you
sure?" check before visiting a site with mixed char sets or a
new-to-that-profile unmixed set seems like an useful confirmation
that would not be invoked often, but would be likely to avoid a trip
to the phishy sites. The same approach would work for the 99/1
or 100/0 distribution. The UI should be more of:
"You have never visited a site in this language/character set before"
More_Info. Cancel? Proceed?
