8. The method of claim 1 , further comprising: adjusting the author likelihood score for the particular user based on one or more subjective criteria associated with the particular user, where determining whether the retrieved author likelihood score is greater than the particular threshold includes: determining whether the adjusted author likelihood score is greater than the particular threshold.
9. The method of claim 8 , where the one or more subjective criteria include at least one of: interests associated with the particular user; areas of expertise associated with the particular user; a geographic area associated with the particular user; or a list of uniform resource locators associated with the particular user.