Does anyone have any experience with SocialVibe? "With the SocialVibe widget, bloggers can donate real money to their charities without the need to dip into their own pockets. Instead, the money is generated from brand advertisers that the bloggers self-select as the sponsor (e.g. Showtime, Sprint, Colgate, Kraft Foods, etc.). To be more specific, once bloggers install the SocialVibe sidebar widget on their Wordpress blog, money will be earned for charities every time readers engage with the widget (e.g. rating a Showtime video clip). Bloggers can switch their cause and sponsor as often as they like, and receive regular updates from their charity about goal progress and impact." - Michael Nielsen