The Global Voices Citizen Media Summit 2010 was held this May 6-7 in Santiago, Chile. MobileActive.org was there, and has an interesting write-up:
"Mobile phones have already played a significant role in advancing citizen media around the world. They were instrumental in helping capture photos and videos on the streets of Tehran during 2009 protests that followed the elections there. A video captured during that time even won a prestigious journalism award. ... at least three distinctive advantages mobile phones have over traditional multimedia capturing devices: (1) they are always in our pockets and therefore always accessible (2) when there is a data connection, they allow instant uploading and live coverage and (3) they allow reporters to capture multimedia in more situations, by being lighter to transport, and appearing more innocuous in situations like protests."