Blogging has become one of the most popular ways to report content and discuss it online.

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Founded by Arianna Huffington, Kenneth Lerer and Jonah Peretti in 2005, the blog was acquired by AOL in February 2011 for US $315 million and employs over 9,000 bloggers who contribute newsworthy written content on a wide range of topics.

More » Tech Crunch is a blog that was founded by Michael Arrington in 2005, which focuses on blogging about breaking news in technology, computers, Internet culture, social media, products, websites and startup companies.

The blog has over 4.5 million RSS subscribers and inspired the launch of the Tech Crunch Network, which includes a number of related websites like Crunch Notes, Mobile Crunch and Crunch Gear.

Tech Crunch was acquired by AOL in September 2010 for US $25 million. More » Founded in 2005 by Pete Cashmore, Mashable delivers newsworthy content about social media, web development, Internet culture, gadgets, mobile devices and online entertainment.

While Mashable only has about 50 employees, the blog packs a powerful punch in “all that’s new on the web,” and a reputation as the top source for social media news and the third most popular blog as ranked on Technorati.

More » For those who like to stay on top of all things related to gadgets and consumer electronics, the Engadget blog is a valuable source for getting the latest news and information on everything from smartphones to tablet computers to cameras.

Engadget was co-founded in 2004 by former Gizmodo editor Peter Rojas and purchased by AOL in 2005.

Engadet also operates ten other blogs with four of them in English and six others in different languages. If you are, then the Think Progress blog is definitely for you.

Think Progress is associated with the Center for American Progress Action Fund, which is a non-profit organization that seeks to provide information for the advancement of progressive ideas and policies.

Some of the main sections on the blog include economy, green, LGBT, health, justice and security.

Think Progress is frequently ranked amongst the top five most popular blogs on Technorati.