Facebook has over 400 million active users who are increasingly older than 35. Each user has on average 130 friends and half login every day, making Facebook the third most popular site for internet users over 65. Posts on Facebook can include text, photos, videos, and content from games. Twitter has 15 million active users who generate most of the site's activity, with an average of 27 followers per user. Twitter is growing fastest among younger people under age 24 and allows sharing short information through posts, mentions, hashtags, geocodes, and links.

1. The platforms: facebook

2. Facebook 400 million active users Each with about 130 friends 50% login every day Used by 56% of Internet users Is the No. 3 site for Web users 65+ Growing fastest among 35+ Very personal, lots of info Source: Facebook, Nielsen, Inside Facebook

4. Allows you to publish into their stream

6. Anatomy of facebook

7. Anatomy of facebook: feeds

8. Anatomy of facebook: feeds

9. The platforms: twitter

10. twitter 15 million active users, 75 million total Average users has 27 followers Active users account for most of Twitter’s activity Growing among young people Growing among 24< Short information bursts, very adaptable Source: RJMetrics, Business Insider

11. Anatomy of twitter (just like facebook)

12. Anatomy of twitter: posts @mention Hashtag Geocode Short link

13. Anatomy of twitter: feeds

14. Anatomy of twitter: feeds