Grab bag for January 29, 2009 Itunes Plus: iTunes Plus Upgrades Go A La Carte, No Longer All-or-Nothing About time. I haven’t checked recently but the last time I looked, the “all or nothing” upgrade price for my library was almost $400. (tags: productmanagement itunes pricing) Introducing Measurement Lab (Official Google Blog) Am I being filtered? How to find out. (tags: internet google netneutrality statistics)