Social media - Twitter and Facebook - is absolutely vital in promoting your campaign. You can also use your website to keep people updated and you can also build a email database to let people know about your campaign. People love getting updates about how you are doing and that will definitely lead to more donations. Don’t forget to use the updates section on your Crowdfunder page. You can always recycle the copy elsewhere. It’s all about content. Share stories, pictures, progress towards your target, messages of support. People love to be kept informed. Make them part of the campaign and give them a stake in achieving your target.