BusinessWeek has a great article/chart illustrating who is doing what online.

Online activities are broken down by:

• Creators - publishing content
• Critics - commenting on content
• Collectors - gather information using RSS
• Joiners - use social networking sites
• Spectators - readers and viewers
• Inactive - are online, but are not participating

To no surprise, the younger end of spectrum are the most active. How long will it take for the Baby Boomers and Seniors to get involved? Do you think they ever will?