Apple snags 14 percent of U.S.-based PC retail sales in February [1] Yahoo: We’ll double our cash flow [2] [3] Justices turn down Microsoft appeal [4] Amazon: Vista SP1 to ship Wednesday [5] Online oligarchy: Old guard dominates Net news coverage [6] Returns, technical problems high with flash-based notebooks [7] State agency to destroy unauthorized USB drives [8] Intel moving to six-cores this year; What will you do with them? [9] Wacky Apple patent application shows dual-screen ‘iPhone 2.0′? [10] FriendFeed is not the new Twitter, Is it? [11] One minute of science per five hours of cable news [12]