Casey Kelso, colleague and teacher at the Master in Fundraising, I recommend this site just launched the campaign by his nonprofit organization, Unicef. The site of the campaign Unite for Children is beautiful, great pictures, clear message about what you ask the donor or navigator to do.
And your organization is also campaigning online? Submit your site in the comments, will look happy!

If you click on the image above you can see a preview of the home page of the UNICEF campaign.