Why is embedding key-value pairs into URLs (http://www.example.com/foo/bar) better?

[dseals22]

Why is embedding key-value pairs into URLs (http://www.example.com/foo/bar) better than the traditional GET parameter syntax (http://www.example.com ?foo=bar)?

[Niheel]

It helps simplify the design of the application.
You can tell what it does just by looking at the URL structures.

Also there are search engine optimization benefits to it.

[dseals22]

@niheel Do you know where I can find more resources on this at? Can you compare the differences between embedding key-value pairs and the GET parameters in more detail? Examples of these comparison with a link source would be great.