Nested routes and parameters for Rails URLs (best practice)

Question

I have a decent understanding of RESTful URLs and the whole theory behind URL allocation, but I'm still not quite sure how it looks in a corporate application like Amazon, StackOverflow or Google ...

Google has these URLs:

• http://code.google.com/apis/ajax/
• http://code.google.com/apis/maps/documentation/staticmaps/
• https://www.google.com/calendar/render?tab=mc

Amazon like this:

• http://www.amazon.com/books-used-books-textbooks/b/ref=sa_menu_bo0?ie=UTF8&node=283155&pf_rd_p=328655101&pf_rd_s=left-nav-1&pf_rd_t=101&pf_rd_kpf_rd_1_pf_rd_jf_rd_fid_fid_fid
• http://www.amazon.com/Ruby-Programming-Language-David-Flanagan/dp/0596516177/ref=sr_1_1?ie=UTF8& S = & books amp; QID = 1258755625 & avg = 1-1

And StackOverflow like this:

• https://stackoverflow.com/users/169992/viatropos
• stack overflow
• https://stackoverflow.com/questions/tagged?tagnames=html&sort=newest&pagesize=15

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