The codenames of some of the collection codenames were redacted: FAIRVIEW and BLARNEY were visible, STORMBREW and OAKSTAR were not.
What's really quite interesting is that they're typeset differently on the redacted/unredacted slides.
http://www.washingtonpost.com/wp-srv/special/politics/prism-...
http://static.guim.co.uk/sys-images/Guardian/Pix/pictures/20...
EDIT: Also, as the WaPo article points out, the map is different too...