Google reader didnt force you to use their dashboard each time you login. Plus I don’t need to be reminded what I saved last.
The URL changes when you visit a site. Just bookmark that instead. That’s why the URL changes.
Also, NewsBlur has no intention of being like Google Reader. This is an important distinction, since whatever Reader did weighs little on me. I never used it and it played very little part in my design for NewsBlur.