This is an exciting website (from: digiactive) for anybody who wants to effect social change:
Vote Report India is a collaborative citizen-driven election monitoring platform for the 2009 Indian Lok Sabha elections. Users contribute direct SMS, email, Twitter and web reports on violations of the Election Commission’s Model Code of Conduct. The platform aggregates these direct reports with news reports, blog posts, photos, videos and tweets related to the elections from all relevant sources, in one place, on an interactive map.
It is also worth to watch this great video which gives tips on digital activism: