Early adopters are indicative for the future (by definition), That's what I like about this survey that I found through emarketer.com. Check this graph and discover the numerbers for the general public in say 2 years or so.

Interresting trends:
- Half of the online activities are communication-related, three out of eight have to do with video or sound.
- E-mail is nowhere (as discussed in e-mail is dead) and instant messaging rules.
- 14% uses RSS (probably not counting the ones who use RSS without knowing it)
- 13% listens to Podcasts!