You can use the annotations on the video to go to all the channels mentionned if you watch it directly on youtube. You just have to clic the youtube logo on the player and it will get you there.Here is a handy list of all these fantastic youtubers:
http://youtube.com/ijustine
http://youtube.com/nigahiga
http://youtube.com/WHATTHEBUCKSHOW
http://youtube.com/ceciley
http://youtube.com/TotallySketch
http://youtube.com/Itkman
http://youtube.com/runnyrunny999
http://youtube.com/jon
http://youtube.com/JPizzle1122
http://youtube.com/jory
http://youtube.com/wrecklesseating
http://youtube.com/cultmoo
http://youtube.com/edwinsgeneration
http://youtube.com/cincodevlogo
http://youtube.com/hilahcooking
http://youtube.com/braladyjapan
http://youtube.com/NintendoCapriSun
http://youtube.com/vlogbrothers
http://youtube.com/FlippyCat
http://youtube.com/BrettTheIntern
http://youtube.com/averagebetty
http://youtube.com/ponceman
http://youtube.com/foodwishes
http://youtube.com/ThatsEsthertainment
http://youtube.com/jpmetz
http://youtube.com/ProjectRant
http://youtube.com/wcfoodies