Twitter has emerged from a simple SMS service created by the folks at the San Francisco-based podcasting company Odeo to the world’s most popular micro-blogging platform with over 54 million users.

In the early days of Twitter (2006-2007), the Internet company is a ‘true’ micro-blogging platform just like Plurk and Jaiku. At that time, most users published tweets (a.k.a updates) about their lifestyles (eg. I’m having lunch with my boss) and share their opinions and thoughts regarding a particular issue (eg. I think Brawn’s Jenson Button will win this year’s F1 season.) As times goes by, users change the main focus of Twitter. It’s no longer just a “What are you doing?” platform. I’d say it’s more of real-time information of the things users care about — work, industry, company, news.

Also, the culture of Twitter is all about participation in a large public square. Dubbed as an “epicenter of world events”, Twitter is filled with lots of news and information. Everyone on Twitter has become a web journalist, breaking news at a much faster pace and probably highe