If you work with nonprofits then here is some good news you can pass along. Google is providing free resources to help nonprofits get the word out about their organization. Some of the benefits include Adwords which can help your customer drive new donors to their organization. They have to apply, but the benefits can be significant. Here are a couple videos that explain the program and a link to the website.
Click on this link to get more information: http://www.google.com/nonprofits/. If you work with nonprofits this information can be very valuable to them and help them see you as a valuable and trusted partner, not just as someone who is trying to sell them something.