via Social Media Case Study: Twitter Alights at RSA Conference « PR-Squared.

(more detail on the direct link)

1. 21% (One Fifth) of Twitter accounts are empty placeholders.
2. Nearly 94% of all Twitter accounts have less than 100 followers.
3. March and April of 2009 were the tipping point for Twitter.
4. 150 followers is the magic number.
5. A small minority creates most of the activity.
6. Half of all Twitter users are not “active.”
7. Tuesday is the most active Twitter day.
8. APIs have been the key to Twitter’s growth & utility.
9. English still dominates Twitter.
10. The cities with the biggest Twitter populations are New York, Los Angeles, Toronto, San Francisco, and Boston. Los Angeles is the fastest growing city on the list.

via Twitter / Targa Media: If social media geeks are ….

direct Influential Marketing Blog: 10 Stunning (And Useful) Stats About Twitter.

via Social Brand Index

• Only two CEOs have Twitter accounts.
• 13 CEOs have LinkedIn profiles, and of those only three have more than 10 connections.
• 81% of CEOs don’t have a personal Facebook page.
• Three quarters of the CEOs have some kind of Wikipedia entry, but nearly a third of those have limited or outdated information.
• Not one Fortune 100 CEO has a blog.

via Top CEOs Leave Social Media To The Plebs .

via Nest Unclutterer.

via Twitter Tools: The Definitive List of the Best Twitter Tools Ever | Let’s Do It! – Internet Marketing Blog – The Outsourcing Company – Internet Marketing Agency.

via Facebook users no longer insulting each other as much – or having as much sex | Metro.co.uk
.

via Guide to Twitter – The Ultimate Guide for Everything Twitter | Webdesigner Depot.

via 5 Tips for Optimizing Your Brand’s Facebook Presence.