http://www.rositacortez.com/social-media-101/fundraising/make-the-case-for-giving-7-tips-to-help-your-nonprofits-increase-its-year-end-appeal-response/ Advancing the Mission of Nonprofits via Social Media Sat, 05 Feb 2011 16:03:52 +0000 hourly 1 http://wordpress.org/?v=3.1