I know, super corny but I couldn't resist. :)
In case your wondering - e-mail is still the killer app, i.e. the best way to connect with your supporters online. Keep your eye on blogs, social networking sites, YouTube for Nonprofits, and other online marketing solutions but don't forget about good old e-mail because 92% of online adults send or read it! Don't believe me? Go here.
If you do NOTHING ELSE with online marketing this year, you MUST:
1) Round up all of your donor's e-mail addresses.
2) Buy a subscription to an e-newsletter platform. (Here's a sample to choose from.)
3) Pick a template.
4) Write a SHORT story about 1 client's success.
5) Upload your addresses.
6) Hit send and see what happens.