Happy 10th Birthday, LinkedIn

1117 connections and counting!

Interesting Numbers

About Facebook

- 800 million: users
- 500 million: access every day
- 350 million: access via mobile
- 2000: the number of people who work at Facebook

About Average Friends on Facebook

- 5: your inner circle of trust
- 15: your sympathy group
- 50: people you can keep up to date with
- 150: the physiological limit of our brain's ability to interact with people

About LinkedIn

- 130 million: sign-ups out of a global universe of 600 million professionals
- 2: new sign-ups per second

About Google

- 5 billion: users by end of 2010
- 5 billion: searches a day
- 3 million channels: (the number of channels on YouTube in the next 5 years)
- 250 million: the number of websites Google searches
- 20,000: the number of people who work at Google

About Mobile

- 80%: the percentage of clients who don't have a mobile-adapted website
- 95%: the percentage of mobile apps that fail!
- 835 million: the number of people who currently use smart phones
- 5.6 billion: total mobile phone users and the potential for growth as
smart phones take over

About Yelp

- 20 million: the number of reviewers who drive the quality of their
data

About Twitter

- 800: the number of people who work at Twitter
- 8000: the record for the number of tweets per second (Beyonce
announcing she was pregnant in the MTV movie awards)
- 100 million: active users
- 600,000: new users every day
- 250 million: tweets a day
- 57%: the percentage of active users on mobile

About Zynga

- 3300: the number of people who work at Zynga
- 55 million: players per day
- 13: the number of different languages they play in
- $52 billion: the size of the gaming market

Is this another brand bubble?

LinkedIn floated last week at 214 times its 2010 profit of $15.4m. Significantly cheaper than its Chinese equivalent Renren. But would you consider a sound investment a brand which claims in its float prospectus "we expect our revenue growth rate to decline, and, as our costs increase, we may not be able to generate sufficient revenue to sustain our profitability over the long term". Interesting comments in FT's Lex and The Week.

Microsoft also paid $8.5bn for Skype. Was it worth it? Informed commentators like Steve O'Hear on TechCrunch think not. Almost twice the amount Google was offering. More bravado than business sense?