Many nonprofits are finding ways to use social media for social good. In some ways it is a natural fit, because nonprofits are built around themes of relationship building to create positive change. This commonality has led to to a new, hybrid type of website which is not owned by a single nonprofit, but rather focused on the online networks of individuals. They enable people to support causes and connect with others who share their passions. This in turn helps to inspire more engagement and support from a growing community. This is an online form of grassroots organizing, which has proven effective in raising funds and creating social impact. Crowdrise is a good example of one of these hybrid sites, which uses the concept of crowd-sourcing to create an online community of volunteers that respond to requests for assistance from charities to raise money or help out in other ways.