Why this have PR 6
url.biz/Business/Home_Business


But this 0 ?????
url.biz/Business/Home_Business
url.biz/Business/Home_Business/index.html

WHY ???

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Looks like all the links pointing to this page are pointing to:

http://www.url.biz/Business/Home_Business

not

http://www.url.biz/Business/Home_Business/

eg same as mysite.com?c=5
doesnt equal
mysite.com?c=4

thats just what I see, but Im by far not an expert

This is it. Because you should always get your links to point to the same URL.
If you use ...name/ or ...name/index.html it's not the same thing, so both will have a different PR because you are splitting it.

So does it count a backlink to the site? Bcos when i search in
http://www.webmasterbrain.com/prog/ - it show PR 0 ?
but when i go to the site it show 6??

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