Bloggercom

Bloggercom was launched by Pyra Labs in August 1999. As one of the earliest dedicated blog publishing tools, it is credited for helping popularize the format.

In February 2003, Pyra Labs was acquired by Google under undisclosed terms. The acquisition allowed premium features that Pyra charged for to be free. About a year later, Pyra Labs' co-founder, Evan Williams, left Google.

On May 9, 2004, Blogger introduced a major redesign, adding features including CSS-compliant templates, individual archive pages for posts, comments, and posting by email.

On 14 August 2006, Blogger launched its latest version in beta, codenamed Invader, alongside the gold release. This migrated users to Google servers, as well including some new features. In December 2006, this new version of Blogger was taken out of beta. Currently, it requires a Google account, and offers more advanced features; however, one can still use the previous version if desired

It currently hosts a huge number of blogs, ranging from the personal to those used purely for business. Some blogs get large numbers of visitors every day yet remain hosted on Blogger's free service.

Some Blogger users were irritated that in order to upgrade to the new Blogger service (which has new features and more reliability) a user would have to create a Google Account. There is also a petition to change the abandoned blog policy, which does not allow blogspot.com addresses to expire, preventing new users from taking abandoned addresses.
 (Source: Wikipedia, company website)