Interactivity

It is a kick to receive feedback from people who have taken interest to read and criticize your work. These are people you have never heard of; who stumble on your Weblog and become a part of your thinking process.

Lack Of Marketing Constraints

When blogging it is not necessarily to tailor a work piece for a certain readership or demographic. People interested in a perspective finds its author - blogger, instead of blogger finding a publication that reflects people's interests.

Most of time, Weblogs tend to be less about actual reporting and more about analysis and punditry and opinionated commentary. The 9/11 terrorist attacks fuelled public's appetite for information, analysis and news, if only to make sense of tragedy. Bloggers rose to prominence by feeding this desire.

Blogging has taken off in remarkable fashion; in a way, it has made good where newsgroups have failed. It has kept promise that Internet would provide real community to Web surfers. Tuning in to some of newsgroups devoted to terror attacks; one may sometimes feel to be in middle of a verbal war zone with so much noise passing for informed discussion.

Weblogs run from single person operation to large teams and communities, to business organizations spread throughout world. They offer a great way for readers to find constantly updated news and information. It also allows authors to connect to thousands of readers in a personal way and add honest, unedited voice of thousands to increasingly commercializing Web.

The plethora of tools that helps managing weblog capitalizes on ease of publishing posts to even greater extent.

These are probably reasons why they have been widely adopted and maintained - for several years in some cases.