Although nobody knows the exact Google PageRank values the table below gives a fairly good representation of how many external links, of certain PageRank values, are required to achieve a certain Google PageRank.
| PR | Links For PR3 | Links For PR4 | Links For PR5 | Links For PR6 | Links For PR7 | Links For PR8 |
| 1 | 555 | 3,000 | 17,000 | 93,000 | 508,000 | 2,800,000 |
| 2 | 101 | 555 | 3,000 | 17,000 | 93,000 | 508,000 |
| 3 | 19 | 101 | 555 | 3,000 | 17,000 | 93,000 |
| 4 | 4 | 19 | 101 | 555 | 3,000 | 17,000 |
| 5 | 1 | 4 | 19 | 101 | 555 | 3,000 |
| 6 | 1 | 1 | 4 | 19 | 101 | 555 |
| 7 | 1 | 1 | 1 | 4 | 19 | 101 |
| 8 | 1 | 1 | 1 | 1 | 4 | 19 |
| 9 | 1 | 1 | 1 | 1 | 1 | 4 |
| 10 | 1 | 1 | 1 | 1 | 1 | 1 |
Although link campaigning is a laborious and time-consuming task, every website owner should be running an ongoing link campaign, either themselves or through a search engine optimisation professional.
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