| Rank | Referring Site | Accesses | % | Bytes | % |
|---|---|---|---|---|---|
| 1 | http://www.google.com | 22,679 | 19.69 | 1,013,188,349 | 20.76 |
| 2 | http://images.google.com | 6,874 | 5.97 | 674,910,573 | 13.83 |
| 3 | http://search.yahoo.com | 6,411 | 5.57 | 309,068,654 | 6.33 |
| 4 | http://cmgm.stanford.edu:80 | 4,601 | 3.99 | 927,873 | 0.02 |
| 5 | http://www.stanford.edu | 3,751 | 3.26 | 21,984,091 | 0.45 |
| 6 | http://find.stanford.edu | 3,654 | 3.17 | 306,358,024 | 6.28 |
| 7 | http://steinmanlab.stanford.edu | 3,645 | 3.16 | 29,610,679 | 0.61 |
| 8 | http://search.msn.com | 3,330 | 2.89 | 37,724,839 | 0.77 |
| 9 | http://www.google.ca | 1,790 | 1.55 | 64,194,856 | 1.32 |
| 10 | http://falkow.stanford.edu | 1,706 | 1.48 | 1,153,318 | 0.02 |
| 11 | http://www.bio.davidson.edu | 1,661 | 1.44 | 3,918,226 | 0.08 |
| 12 | http://www.thenoiseboard.com | 1,405 | 1.22 | 55,202,251 | 1.13 |
| 13 | http://falkow | 1,343 | 1.17 | 907,397 | 0.02 |
| 14 | http://brownlab.stanford.edu | 1,250 | 1.09 | 95,873,634 | 1.96 |
| 15 | http://zebrafish.stanford.edu | 1,133 | 0.98 | 882,336 | 0.02 |
| 16 | http://www.google.de | 1,102 | 0.96 | 62,866,753 | 1.29 |
| 17 | http://images.google.ca | 1,044 | 0.91 | 123,632,873 | 2.53 |
| 18 | http://171.65.22.158 | 1,016 | 0.88 | 359,279,445 | 7.36 |
| 19 | http://www.google.co.in | 912 | 0.79 | 38,138,783 | 0.78 |
| 20 | http://www.altavista.com | 898 | 0.78 | 59,338,731 | 1.22 |
| 21 | http://web.ask.com | 827 | 0.72 | 17,176,439 | 0.35 |
| 22 | http://www.google.co.uk | 792 | 0.69 | 49,042,294 | 1.00 |
| 23 | http://www.protocol-online.org | 786 | 0.68 | 6,337,247 | 0.13 |
| 24 | http://www.google.fr | 770 | 0.67 | 51,301,978 | 1.05 |
| 25 | http://scpd.stanford.edu | 756 | 0.66 | 8,995,885 | 0.18 |