Have you heard of Avaaz.org?

Today I got an e-mail inviting me to support a petition BEING circulated by this organization. The cause of the petition itself is, IMO, thoroughly worthy: deeper investigation of the Canadian election fraud around the May 2, 2011 federal election. Browsing the Avaaz website (AVAAZ.ORG) they do appear to be focused on very, very important issues. Yet they provide precious little information about who they really are, their finances, even whether and where they're incorporated.

Do any of you folks know this organization? If this is a reputable bunch of people I'd love to know. Thanks!