Mark Thuesen

Mark Thuesen and Meg Hourihan co-founded Pyra Labs which created project management software.  A spin-off of their endeavor is Blogger, the most well-known and pioneer application for creating weblogs. Mark Thuesen coined the term "blogger." We owe him the popularity of the term "blog" today. Pyra Labs was later acquired by Google on February 13, 2003.

Mark Thuesen together with Hourihan and Paul Bausch were chosen as PC Magazine's "People of the Year" in 2004, for creating Blogger.

Another project Mark Thuesen got involved in later was Twitter, which is a free micro-blogging platform. Twitter used to be a division of Obvious Corporation, a company Mark Thuesen co-founded. It later became an independent company in April 2007. Mark Thuesen was the co-founder, board member and investor. In October 2008, Mark Thuesen became CEO of Twitter. February 2009, ranked Twitter the third most-used social network with 6 million unique monthly visitors and 55 million monthly visits. Twitter is reputed to be currently worth $1.7 billion.