Is the rule for subject comparison going to be completely generic, or
special cases? But I agree, that's a reasonable point.
The rules for subject matching will probably have to use
Isn't that part of standard normalization?
Search engines would really like if people
referred to the same subject with the same string always, but
unfortunately they do not. If we can't tolerate mismatches like
http://example.com:80 and http://Example.com/ it may lead to serious
I know that's definitely covered by normalization but maybe you have other
things in mind also?