| Rank | Referring Site | Accesses | % | Bytes | % |
|---|---|---|---|---|---|
| 1 | http://www.google.com | 24,887 | 21.55 | 1,000,224,665 | 20.33 |
| 2 | http://search.yahoo.com | 8,214 | 7.11 | 275,292,623 | 5.59 |
| 3 | http://images.google.com | 6,972 | 6.04 | 778,572,825 | 15.82 |
| 4 | http://cmgm.stanford.edu:80 | 4,089 | 3.54 | 413,259 | 0.01 |
| 5 | http://www.stanford.edu | 3,975 | 3.44 | 21,070,578 | 0.43 |
| 6 | http://find.stanford.edu | 3,661 | 3.17 | 236,111,245 | 4.80 |
| 7 | http://steinmanlab.stanford.edu | 2,953 | 2.56 | 25,375,848 | 0.52 |
| 8 | http://search.msn.com | 2,762 | 2.39 | 59,521,533 | 1.21 |
| 9 | http://falkow.stanford.edu | 2,220 | 1.92 | 1,516,309 | 0.03 |
| 10 | http://falkow | 1,888 | 1.63 | 1,260,590 | 0.03 |
| 11 | http://www.google.ca | 1,705 | 1.48 | 69,124,922 | 1.40 |
| 12 | http://brownlab.stanford.edu | 1,627 | 1.41 | 101,820,232 | 2.07 |
| 13 | http://zebrafish.stanford.edu | 1,495 | 1.29 | 1,162,033 | 0.02 |
| 14 | http://171.65.21.3 | 1,488 | 1.29 | 462,398,444 | 9.40 |
| 15 | http://www.bio.davidson.edu | 1,439 | 1.25 | 3,292,605 | 0.07 |
| 16 | http://www.google.de | 1,383 | 1.20 | 104,183,856 | 2.12 |
| 17 | http://knowplace.ca | 1,005 | 0.87 | 364,230 | 0.01 |
| 18 | http://images.google.ca | 943 | 0.82 | 115,299,602 | 2.34 |
| 19 | http://web.ask.com | 869 | 0.75 | 10,722,246 | 0.22 |
| 20 | http://www.google.com.au | 816 | 0.71 | 52,086,328 | 1.06 |
| 21 | http://www.protocol-online.org | 781 | 0.68 | 6,758,498 | 0.14 |
| 22 | http://www.google.co.uk | 769 | 0.67 | 16,817,696 | 0.34 |
| 23 | http://www.google.fr | 761 | 0.66 | 45,369,625 | 0.92 |
| 24 | http://genome-www.stanford.edu | 684 | 0.59 | 4,588,361 | 0.09 |
| 25 | http://aolsearch.aol.com | 665 | 0.58 | 60,201,138 | 1.22 |