Yahoo has come up with a way to mix social networking with charities and non-profits. Called Yahoo! For Good, it has partnered with 'charity aggregator' Network for Good and launched a personalized Charity Badge - for people to put on their websites, social networks or email. To promote the initiative, Yahoo! will match the amount raised by the user who generates the largest number of individual donations from their personal social network (up to $50,000).

The Charity Badge works by allowing website owners or social network users to create and publish a personalized badge (essentially a widget). You can even put it on your email signature. With the badge you can set up a link to your favorite charity, so that family, friends and others in your social network can donate as well. Or you can simply copy the code for an existing badge, that someone else set up for a charity. Check out the top 10 badges to get an idea of how this works.