Here are just a few examples of non-profit websites that implement some of the processes that have been outlined in the past few days.
Mercy Corps has a great site that encourages their constituency to get involved with the organization and engage others. Notice at the top of the page is the option to sign up for e-updates. In addition, each and every page has a link to the donation page.
World Vision does their version of community engagement but at a different level.
Here is Compassion‘s version of community engagement.
What is really good about each of these is that they fit within the context of organizational culture. It is important to recognize, as an organization, what you are able to accomodate.
Here is a great article about the use of e-mail to attract people to your website. While this article is written from an e-commerce perspective rather than for non-profits, the principles still apply in many ways.
Obviously there are many more non-profit websites that have recognized the value of an integrated internet strategy and are implementing their plan. Hopefully these few are helpful to you.