Page Rank 5

When I am at PPP, I always see opps that are not eligible to my account. They require blogs with PR5 or higher. This humble blog of mine has a PR 4 and my other blog has fell from 3 to 0. I wonder how many blogs out there has PR 5 and above. I've seen some opps requiring PR 6. No wonder the opps always there, may be not too many people has taken them.