I saw this Pew survey chart some time ago (click to enlarge), but it is still relevant (and, if anything, the results would be even more pronounced today). It seems to me that churches that want to appeal to and connect with anyone age 45 or younger clearly need to pay attention to electronic media.
More than 70% of people ages 18-45 use the internet not only for email but for social networking (SNS), video, shopping, banking, and more. Those numbers seem likely only to increase, indicating a potential for outreach and ministry that Jesus might have called "a field white unto harvest."
(NOTICE how few people, percentage-wise, listen to podcasts--one of the few electronic media areas churches pay attention to. By contrast, note the comparatively wide use of social media (SNS) and video, which might indicate where churches can more effectively put their efforts)