Twitter for social change

i can see some signs that the twitter debate is moving beyond the cappucino-digerati and in to the world of social movements.

andy carvin's done a good post at Can Twitter Save Lives? and i've focussed more on field use in africa in Urgent Action IM Bots and Twitter for Darfur.

And i just heard today from a friend that social campaigning / subversive use of twitter was discussed over the w/end at Barcamp Bangalore

If anyone has any other ideas / examples then please leave a comment or contact me.

dan