A limitation of Drupal's pager system, that comes as a disappointment to some SEO "freaks" is the separate "page" query in the URLs to browse multiple pages. Say, a third page on a paginated node would have node/1?page=0,2 in the URL. Instead here's a method to accomplish a better looking version (like node/1/page/3). "Paging Sweet Urls" is a module that converts the "page/X" part in the URL into the actual "page" query that the pager system understands. We also need to override theme_pager_links() to set proper hyperlinks in pager navigation. Still this implementation has a limitation that it cannot handle the functionality with aliased URLs (see below). I believe, it'll need a mod_rewrite apache directive to be able to handle URL aliases. But I'll take up with it some other time.

Also, there's Clean Pagination module providing similar functionality, but not for node pages. It can, however, handle views, etc. URLs. Find the code and instructions ahead.

Download "Paging Sweet Urls" module