Dave McClure has an aggressive global view of startups and openly informs and schools the industry with slides like Building Startup Ecosystem.
If you follow @davemcclure and @500Startups on Twitter, please consider mentioning “@charlesjo says to follow you” 
It’s a personal project on social networking and community growth.
(Of course, all welcome to follow me too @charlesjo).
Next exercise coming up soon. Feedback is always welcome!
Charles