This should be a very simple question for seo experts. Let's say we have the following URLs:

• http://www.test.com/some-sort-of-page
• http://www.test.com/some-sort-of-page?pgid1189
• http://www.test.com/some-sort-of-page/page/1189
• http://www.test.com/page/1189/some-sort-of-page

The first one is an ideal solution. What i need to do is to somehow pass a resource identifier in the url to know exactly what this url is pointing to, since it can be pointing to a lot of different things. In the second URL, "pgid" specifies that the resource is a "page". URLs 3 and 4 specify the same thing differently.

I do not care if the URL is friendly to people, because, let's face it - 99.9% of people will never ever ever bother to remember such url no matter how "friendly" it is. So the question is: which of the last 3 URLs would be the best solution for search engines? My guess is it would be the 2nd with query string, but i might be wrong.

Thanks for your thoughts

P.S. please don't offer using the first url. There's no problem using it, but the question is not about that.