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ciml - 2:51 pm on Jul 11, 2005 (gmt 0)
So 100 links from PR0 and 1 pages would normally give you PR0 to 2, while 100 links from PR4 or 5 pages would normally give PR4 to 6.
The PageRank you get depends on the PageRank of the pages that link to you (and on the number of links on those pages, but that makes little difference).