17. The computer program product of claim 15 , wherein the authorship criteria comprises an extent to which the blog author of corresponding blog content is deemed authoritative.
17. The computer program product of claim 15 , wherein the authorship criteria comprises an extent to which the blog author of corresponding blog content is deemed authoritative. 20. The computer program product of claim 17 , wherein the blog author of corresponding content is deemed authoritative according to a number of times the content has been linked to by different Web pages.