17. A non-transitory computer-readable medium containing instructions executable by one or more devices, the instructions comprising: one or more instructions that, when executed by the one or more devices, cause the one or more devices to: identify a group of comments; determine that a first comment, of the group of comments, does not include a plurality of links pointing to a plurality of different documents; remove the first comment from the group of comments based on the first comment not including the plurality of links pointing to the plurality of different documents; identify a second comment that includes the plurality of links, the plurality of links including: a first link pointing to a first document, and a second link pointing to a second document that is different from the first document; identify one or more factors associated with the first link, where the one or more factors associated with the first link include at least one of: a click through rate associated with the first link, explicit user feedback regarding the first link, a length of an address associated with the first link, a measure of popularity associated with the first document, or a comparison of a topic associated with the second comment and a topic associated with the first document; identify one or more factors associated with the second link, where the one or more factors associated with the second link include at least one of: a click through rate associated with the second link, explicit user feedback associated with the second link, a length of an address associated with the second link, a measure of popularity associated with the second document, or a comparison of the topic associated with the second comment and a topic associated with the second document; determine that the second comment is more relevant to the first document than to the second document based on the one or more factors associated with the first link; associate the second comment with the first link based on the second comment being more relevant to the first document than to the second document; determine not to associate the second comment with the second link based on the second comment being more relevant to the first document than to the second document; and store information that associates the second comment with the first document.
17. A non-transitory computer-readable medium containing instructions executable by one or more devices, the instructions comprising: one or more instructions that, when executed by the one or more devices, cause the one or more devices to: identify a group of comments; determine that a first comment, of the group of comments, does not include a plurality of links pointing to a plurality of different documents; remove the first comment from the group of comments based on the first comment not including the plurality of links pointing to the plurality of different documents; identify a second comment that includes the plurality of links, the plurality of links including: a first link pointing to a first document, and a second link pointing to a second document that is different from the first document; identify one or more factors associated with the first link, where the one or more factors associated with the first link include at least one of: a click through rate associated with the first link, explicit user feedback regarding the first link, a length of an address associated with the first link, a measure of popularity associated with the first document, or a comparison of a topic associated with the second comment and a topic associated with the first document; identify one or more factors associated with the second link, where the one or more factors associated with the second link include at least one of: a click through rate associated with the second link, explicit user feedback associated with the second link, a length of an address associated with the second link, a measure of popularity associated with the second document, or a comparison of the topic associated with the second comment and a topic associated with the second document; determine that the second comment is more relevant to the first document than to the second document based on the one or more factors associated with the first link; associate the second comment with the first link based on the second comment being more relevant to the first document than to the second document; determine not to associate the second comment with the second link based on the second comment being more relevant to the first document than to the second document; and store information that associates the second comment with the first document. 18. The non-transitory computer-readable medium of claim 17 , where the one or more factors associated with the first link include the click through rate associated with the first link; and where the one or more instructions to determine to associate the second comment with the first document include one or more instructions to determine to associate the second comment with the first document based on the click through rate associated with the first link.