baroque Chou said:
anyone know how google spiders access web site, how dose they manage to
get the href information? do they have special access right or
something? any help is appreciated
No, google doesn't have any special access rights, they access your website
the same way as anyone else. This means that if you have a login screen
which you need to get past to view your site then the google spider won't
get past it. Some sites explicitly grant the google bot (or other bots)
access, but that's an exception not the rule.
In summary, what you can see in your browser (or better still, what I could
see in my browser if you gave me the url) is what the google spider can see.
The only exception to this is that the google spider is a little more fussy
about correct html than most browsers, so its worth checking that your code
validates and links are correct.