Twitter, Facebook and other social media sites are great for staying in touch with friends and family, but they can also play a huge role in your fundraising efforts.While interacting with your friends and followers, be sure to mention your charity occasionally. If you are interested to know more, take a look at Social Fundraising. Don't beat them over the head with it, but make sure they are aware of your cause and where to go to find more information. Encourage them to join you by supporting your charity and to share your cause with their friends and followers.For maximum exposure, set up a separate account solely for the purpose of getting support for your cause. It doesn't have to be named after your charity. If you are supporting a local food bank, for example, set up a group to discuss hunger in your community. As part of the discussions, you can suggest that people join your cause or donate to your charity.If you have a blog about your charity, social media is a good place to post links to your relevant posts where people can read about the activities of your charity. You don't want to flood the boards with your links, but fit them into discussions or post them periodically, like weekly. Using your charity account, join as many similar groups as you can. Invite each group's members to join your group. Then ask them to invite their friends and followers. The more people you have reading your posts or taking part in your discussions, the greater chance you have of receiving donations from a few of them. For more detailed information, visit Social Fundraising.