I've seen this on some sites that instead of using
www.somesite.com/page.php?action=view&member=some_member
they use structure like this
www.somesite.com/page.php/view/some_member
How do I do that?
How to rewrite URL to avoid ? and &, and use /
Postnuke has a "solution" to this that involves serious use of mod_rewrite and output buffering. Do a search for search engines and "karateka" and you'll find it. Mind you, it didn't entirely work for me, and I've heard horror stories about the resource hog that mod_rewrite can be.
Naturally, if you use anything other than apache to serve your stuff, you may be in trouble.
Was looking into this myself recently and one site that might be of some help is:
http://www.webmasterbase.com/article/910/38