Citizen journalism examples abound, mostly as publications outside the MSM. See below for a listing of some sites that practice citizen journalism:

Baristanet
Brattleboro Community News and Discussion
NewWest
CoastSider
Bayosphere
Greensboro101
NowPublic
WestPortNow
BlufftonToday
Backfence. See the Full list of communities
Associated Content
PegasusNews
OhMyNews
GradeTheNews
OrangePolitics
MyMissourian
H20Town
Metroblogging