I think I read somewhere that it was a good practice to have certain totally dynamic and irrelevant parameters excluded from the nice URL rewriting techniques. Like here on the StackOverflow galaxy, when you login the URL is /users/login?returnurl=parameter.The reason would also have been that it kind of prevents search engines to follow those links, and could be a good idea for transition pages that change often and should not be indexed as is, but still followed, like /news?page=5 where this page would be an index of the latest news, and by nature changes over time as old news are pushed down.Is there any sense to that? Would you agree, and if so maybe point to some resources? If not, what do you think of it, and what should be done with those pages that keep changing?Thanks for any thought!
Should I differentiate parameters in my URLs?
seo;url rewriting
There is really only one rule: If the page content doesn't change when the parameter changes, then tell Google to ignore it.Your returnurl example is a good one - I assume the page doesn't change at all, so tell Googlebot to ignore that parameters in Webmaster Tools. (Actually Google is pretty good at detecting these anyway.)But for page - definitely do not ignore this! You need the search engines to parse all your pages to find the links to the content.