| Rank | Referring Site | Accesses | % | Bytes | % |
|---|---|---|---|---|---|
| 1 | http://www.google.com | 67,681 | 20.70 | 1,990,252,366 | 15.09 |
| 2 | http://images.google.com | 27,595 | 8.44 | 4,269,850,925 | 32.37 |
| 3 | http://search.yahoo.com | 20,233 | 6.19 | 518,051,826 | 3.93 |
| 4 | http://www.stanford.edu | 13,045 | 3.99 | 65,526,284 | 0.50 |
| 5 | http://cmgm.stanford.edu:80 | 11,914 | 3.64 | 99,734,527 | 0.76 |
| 6 | http://steinmanlab.stanford.edu | 8,194 | 2.51 | 69,883,142 | 0.53 |
| 7 | http://search.msn.com | 7,269 | 2.22 | 122,240,215 | 0.93 |
| 8 | http://search.stanford.edu | 6,555 | 2.00 | 60,636,860 | 0.46 |
| 9 | http://falkow.stanford.edu | 6,206 | 1.90 | 4,253,992 | 0.03 |
| 10 | http://falkow | 5,506 | 1.68 | 3,673,407 | 0.03 |
| 11 | http://zebrafish.stanford.edu | 5,304 | 1.62 | 4,128,830 | 0.03 |
| 12 | http://www.google.ca | 5,088 | 1.56 | 129,980,744 | 0.99 |
| 13 | http://171.65.21.3 | 3,983 | 1.22 | 1,401,994,902 | 10.63 |
| 14 | http://www.bio.davidson.edu | 3,454 | 1.06 | 7,760,536 | 0.06 |
| 15 | http://www.google.de | 3,385 | 1.04 | 135,235,721 | 1.03 |
| 16 | http://images.google.ca | 3,376 | 1.03 | 577,578,987 | 4.38 |
| 17 | http://brownlab.stanford.edu | 3,319 | 1.02 | 103,042,267 | 0.78 |
| 18 | http://www.protocol-online.org | 2,301 | 0.70 | 18,895,933 | 0.14 |
| 19 | http://www.google.co.uk | 2,064 | 0.63 | 52,236,203 | 0.40 |
| 20 | http://boards.weddingchannel.com | 1,944 | 0.59 | 54,555,130 | 0.41 |
| 21 | http://www.google.fr | 1,941 | 0.59 | 78,067,367 | 0.59 |
| 22 | http://genome-www.stanford.edu | 1,938 | 0.59 | 14,222,248 | 0.11 |
| 23 | http://find.stanford.edu | 1,772 | 0.54 | 127,116,014 | 0.96 |
| 24 | http://scpd.stanford.edu | 1,739 | 0.53 | 20,008,003 | 0.15 |
| 25 | http://aolsearch.aol.com | 1,629 | 0.50 | 153,527,035 | 1.16 |