If you are interested in networking online with other nonprofit writers and editors, check out the new Writers and Editors Affinity Group at N-TEN. It’s essentially an email discussion list, but affinity groups can also produce blogs and wikis.
As of today, there are 39 N-TEN Affinity Groups, so you might find others that interest you as well. I’m also part of the Nonprofit Blogging, Nonprofit Webmasters, and Email Deliverability Affinity Groups, for example.
