| Rank | Referring Site | Accesses | % | Bytes | % |
|---|---|---|---|---|---|
| 1 | http://www.google.com | 5,787 | 21.50 | 219,882,471 | 20.40 |
| 2 | http://search.yahoo.com | 1,880 | 6.98 | 73,093,288 | 6.78 |
| 3 | http://images.google.com | 1,674 | 6.22 | 185,957,795 | 17.25 |
| 4 | http://www.stanford.edu | 1,005 | 3.73 | 5,009,274 | 0.46 |
| 5 | http://find.stanford.edu | 950 | 3.53 | 57,017,938 | 5.29 |
| 6 | http://cmgm.stanford.edu:80 | 800 | 2.97 | 28,801 | 0.00 |
| 7 | http://search.msn.com | 670 | 2.49 | 10,302,625 | 0.96 |
| 8 | http://steinmanlab.stanford.edu | 605 | 2.25 | 5,063,921 | 0.47 |
| 9 | http://falkow.stanford.edu | 538 | 2.00 | 360,372 | 0.03 |
| 10 | http://www.google.ca | 365 | 1.36 | 10,504,142 | 0.97 |
| 11 | http://falkow | 347 | 1.29 | 233,232 | 0.02 |
| 12 | http://www.google.de | 341 | 1.27 | 20,209,620 | 1.87 |
| 13 | http://171.65.21.3 | 323 | 1.20 | 97,811,918 | 9.07 |
| 14 | http://zebrafish.stanford.edu | 319 | 1.18 | 251,286 | 0.02 |
| 15 | http://brownlab.stanford.edu | 317 | 1.18 | 12,602,987 | 1.17 |
| 16 | http://www.bio.davidson.edu | 306 | 1.14 | 701,551 | 0.07 |
| 17 | http://images.google.ca | 274 | 1.02 | 32,815,014 | 3.04 |
| 18 | http://knowplace.ca | 212 | 0.79 | 78,660 | 0.01 |
| 19 | http://web.ask.com | 202 | 0.75 | 2,001,159 | 0.19 |
| 20 | http://www.protocol-online.org | 199 | 0.74 | 1,576,398 | 0.15 |
| 21 | http://genome-www.stanford.edu | 190 | 0.71 | 1,236,995 | 0.11 |
| 22 | http://www.google.fr | 188 | 0.70 | 6,582,542 | 0.61 |
| 23 | http://www.google.co.uk | 187 | 0.69 | 4,858,573 | 0.45 |
| 24 | http://www.google.com.au | 165 | 0.61 | 6,541,772 | 0.61 |
| 25 | http://images.google.de | 161 | 0.60 | 7,953,948 | 0.74 |