Donate to a specific project need, for example to “20 Dollars for a childs books”, or else to a project generally e.g. “Building the multipurpose Center in Hanover Park South Africa”. Rather than a one-off donation, you can become a monthly supporter. So post a link to the project site on your Facebook page or include it in your email-signature. Or print out the project page and pin it to a noticeboard somewhere in the “real world”.
Spread the word! The more people who find out about a project, the more support it will get. So post a link to the project site on your Facebook page or include it in your email-signature. Or print out the project page and pin it to a noticeboard in a school.