| Rank | Referring Site | Accesses | % | Bytes | % |
|---|---|---|---|---|---|
| 1 | http://www.google.com | 5,059 | 18.75 | 244,720,331 | 20.21 |
| 2 | http://images.google.com | 1,500 | 5.56 | 169,740,788 | 14.02 |
| 3 | http://www.thenoiseboard.com | 1,462 | 5.42 | 57,265,895 | 4.73 |
| 4 | http://search.yahoo.com | 1,414 | 5.24 | 77,722,607 | 6.42 |
| 5 | http://cmgm.stanford.edu:80 | 1,023 | 3.79 | 37,616 | 0.00 |
| 6 | http://steinmanlab.stanford.edu | 970 | 3.60 | 7,892,558 | 0.65 |
| 7 | http://find.stanford.edu | 830 | 3.08 | 82,554,145 | 6.82 |
| 8 | http://www.stanford.edu | 809 | 3.00 | 4,760,602 | 0.39 |
| 9 | http://search.msn.com | 690 | 2.56 | 8,101,775 | 0.67 |
| 10 | http://www.google.ca | 414 | 1.53 | 24,227,428 | 2.00 |
| 11 | http://www.bio.davidson.edu | 380 | 1.41 | 853,586 | 0.07 |
| 12 | http://falkow.stanford.edu | 377 | 1.40 | 266,411 | 0.02 |
| 13 | http://brownlab.stanford.edu | 309 | 1.15 | 20,865,485 | 1.72 |
| 14 | http://171.65.22.158 | 262 | 0.97 | 88,217,336 | 7.29 |
| 15 | http://zebrafish.stanford.edu | 261 | 0.97 | 218,883 | 0.02 |
| 16 | http://www.google.de | 242 | 0.90 | 14,543,816 | 1.20 |
| 17 | http://falkow | 237 | 0.88 | 157,639 | 0.01 |
| 18 | http://www.google.co.in | 231 | 0.86 | 8,206,983 | 0.68 |
| 19 | http://images.google.ca | 226 | 0.84 | 25,602,405 | 2.11 |
| 20 | http://web.ask.com | 207 | 0.77 | 3,299,977 | 0.27 |
| 21 | http://www.altavista.com | 207 | 0.77 | 9,376,546 | 0.77 |
| 22 | http://www.google.co.uk | 194 | 0.72 | 9,317,412 | 0.77 |
| 23 | http://images.search.yahoo.com | 192 | 0.71 | 23,576,758 | 1.95 |
| 24 | http://www.nocarlno.com | 174 | 0.64 | 5,497,598 | 0.45 |
| 25 | http://www.google.com.au | 160 | 0.59 | 13,748,050 | 1.14 |