Try to use absolute links instead of relative links, because there’s less chance for a spider (not just Google, but any spider) to get confused. In the same fashion, try to be consistent on your internal linking. Once you’ve picked a root page and decided on www vs. non-www, make sure that all your links follow the same convention and point to the root page that you picked. Also, I would use a 301 redirect or rewrite so that your root page doesn’t appear twice. For example, if you select http://www.yourdomain.com/ as your root page, then if
a spider tries to fetch http://yourdomain.com/ (without the www), your web server
should do a permanent (301) redirect to your root page at http://www.yourdomain.com/
So the high-order bits to bear in mind are- make it as easy as possible for search engines and spiders; save calculation
by giving absolute instead of relative links.- be consistent. Make a decision on www vs. non-www and follow the same conventionconsistently for all the links on your site.- Use permanent redirects to keep spiders fetching the correct page.
Those rules of thumb will serve you well no matter what with every search engine,
not just with Google. Of course, the vast majority of the time a search engine
will handle a situation correctly, but anything that you can do to reduce the
chance of a problem is a good idea. If you don’t see any problems with your
existing site, it is not necessary that you go back and change or rewrite links.
But it’s something good to bear in mind when you go for making new sites, for
example.