There are some very innovative churches doing some cool stuff online right now. Check out these two links:
SatanHatesLife.com - a simple but effective website from LifeChurch.tv to support their new series. They have utilized websites similar to this in the past. By the way...their billboards are awesome!!
My Life Story - an incredible site from Granger Community Church! They asked folks to submit their life stories via postcard and they have posted them on this site. Very effective and VERY cool! Check it out!
I love how these churches are leveraging technology to reach people. Who isn't connected nowadays? What a great way to target an audience in an effective and creative way!