| Rank | Referring Site | Accesses | % | Bytes | % |
|---|---|---|---|---|---|
| 1 | http://www.google.com | 18,451 | 21.79 | 525,162,191 | 26.72 |
| 2 | http://search.yahoo.com | 5,871 | 6.93 | 150,757,822 | 7.67 |
| 3 | http://www.stanford.edu | 4,772 | 5.64 | 22,522,914 | 1.15 |
| 4 | http://cmgm.stanford.edu:80 | 4,075 | 4.81 | 1,817,673 | 0.09 |
| 5 | http://images.google.com | 3,679 | 4.35 | 84,389,275 | 4.29 |
| 6 | http://search.stanford.edu | 2,174 | 2.57 | 19,631,191 | 1.00 |
| 7 | http://steinmanlab.stanford.edu | 2,055 | 2.43 | 18,870,777 | 0.96 |
| 8 | http://search.msn.com | 1,753 | 2.07 | 29,071,089 | 1.48 |
| 9 | http://falkow.stanford.edu | 1,537 | 1.82 | 1,075,118 | 0.05 |
| 10 | http://zebrafish.stanford.edu | 1,359 | 1.61 | 1,076,418 | 0.05 |
| 11 | http://falkow | 1,341 | 1.58 | 895,667 | 0.05 |
| 12 | http://www.google.ca | 1,151 | 1.36 | 29,043,877 | 1.48 |
| 13 | http://171.65.21.3 | 1,135 | 1.34 | 365,569,173 | 18.60 |
| 14 | http://www.bio.davidson.edu | 1,051 | 1.24 | 2,355,031 | 0.12 |
| 15 | http://www.google.de | 806 | 0.95 | 27,653,116 | 1.41 |
| 16 | http://brownlab.stanford.edu | 795 | 0.94 | 4,928,495 | 0.25 |
| 17 | http://www.google.fr | 574 | 0.68 | 16,106,900 | 0.82 |
| 18 | http://genome-www.stanford.edu | 543 | 0.64 | 3,956,333 | 0.20 |
| 19 | http://www.protocol-online.org | 539 | 0.64 | 4,337,738 | 0.22 |
| 20 | http://www.med.stanford.edu | 537 | 0.63 | 2,545,526 | 0.13 |
| 21 | http://pmgm.stanford.edu | 531 | 0.63 | 362,297 | 0.02 |
| 22 | http://aolsearch.aol.com | 519 | 0.61 | 23,656,914 | 1.20 |
| 23 | http://dir.yahoo.com | 490 | 0.58 | 1,549,438 | 0.08 |
| 24 | http://schaak.pagina.nl | 476 | 0.56 | 2,149,255 | 0.11 |
| 25 | http://auto.search.msn.com | 473 | 0.56 | 7,495,509 | 0.38 |