If newspapers go under, the argument goes, blogs and aggregators will lose the source of much of their news. To assess the validity of that assumption, Daily Kos looked at its “front page” posts for the week of April 6 through April 12, and counted up the sources of their linked items. They found that the plurality came from newspapers, 123 items, but that the newspaper content amounted to only 20 percent of the news items that Daily Kos linked to during the week.