17. A computing device for automatically identifying keywords for advertisement placement, comprising: a feed store for storing items of RSS-style data feeds comprising at least one computer-readable medium; a processor; and a memory device including instructions that, when executed by the processor, cause the computing device to: extract keywords from the items of the RSS-style data feeds, the data feeds providing information about one or more content data; identify a category for advertising using an extracted keyword from among a plurality of categories of items, the items being related to the keyword but the categories being independent of a subject of the keyword and the identification based at least in part on (1) an expected benefit of advertising in a first of the plurality of categories of items and (2) at least one attribute of text contained in at least one item of a second of the plurality of categories of items, the identification including selecting from among the first and the second of the plurality of categories of items based at least in part on scores determined for the expected benefit and the text, the scores normalized to facilitate comparison; generate a link for a landing page based at least in part on the extracted keyword and the identified category; generate a creative based at least in part on the extracted keyword and the identified category; and submit to an advertisement placement service an extracted keyword, the generated link for the extracted keyword, and the generated creative for the extracted keyword for advertisement placement.
17. A computing device for automatically identifying keywords for advertisement placement, comprising: a feed store for storing items of RSS-style data feeds comprising at least one computer-readable medium; a processor; and a memory device including instructions that, when executed by the processor, cause the computing device to: extract keywords from the items of the RSS-style data feeds, the data feeds providing information about one or more content data; identify a category for advertising using an extracted keyword from among a plurality of categories of items, the items being related to the keyword but the categories being independent of a subject of the keyword and the identification based at least in part on (1) an expected benefit of advertising in a first of the plurality of categories of items and (2) at least one attribute of text contained in at least one item of a second of the plurality of categories of items, the identification including selecting from among the first and the second of the plurality of categories of items based at least in part on scores determined for the expected benefit and the text, the scores normalized to facilitate comparison; generate a link for a landing page based at least in part on the extracted keyword and the identified category; generate a creative based at least in part on the extracted keyword and the identified category; and submit to an advertisement placement service an extracted keyword, the generated link for the extracted keyword, and the generated creative for the extracted keyword for advertisement placement. 18. The computing device of claim 17 wherein the RSS-style data feed is a data feed selected from a group consisting of a really simple syndication feed, a resource description framework site summary feed, and a rich site summary feed.