One Cent Call is a microdonations service that lets mobile users donate a small amount every time they make a call or send a text. They get to choose which charity or charities benefits.
CentUp is a US organisation offering a microdonation service that splits donations between artists and creative people, such as bloggers and musicians, and charities.
Toyota's 100 Cars for Good campaign in the US is inviting people to vote for which nonprofit should receive a new car. The voting runs via a Facebook app.