16. A computer-readable medium that stores instructions executable by a computer, the computer-readable medium comprising: one or more instructions to identify documents in a network; one or more instructions to score the identified documents based on a model of a surfer who is likely to make random jumps from certain ones of the identified documents and to follow forward links from certain other ones of the identified documents; and one or more instructions to store the scores for the identified documents.
16. A computer-readable medium that stores instructions executable by a computer, the computer-readable medium comprising: one or more instructions to identify documents in a network; one or more instructions to score the identified documents based on a model of a surfer who is likely to make random jumps from certain ones of the identified documents and to follow forward links from certain other ones of the identified documents; and one or more instructions to store the scores for the identified documents. 19. The computer-readable medium of claim 16 , where the model of the surfer is designed to weight links between a first set of the identified documents less than links between a second set of the identified documents, where the first set of the identified documents includes a first document and a second document, where the first document includes a link to the second document, and where the first document and the second document are stored on a same server, and where the second set of the identified documents includes a third document and a fourth document, where the third document includes a link to the fourth document, and where the third document and the fourth document are stored on different servers.