Blogs are websites, a hierarchy of text, images, media objects and data, arranged chronologically. But blogs differ from other websites by being inherently personal.
Blogs are sites of display and mediated representations of social interaction. Blogging is personal “push-button” publishing made possible by digital technology through the medium of web.
All bloggers share a common ground: the format (Hourihan, 2002)
If blogs are considered to be an electronic tool for the organisation of text, they are a medium (Ryan, 2005 in Routledge Encyclopaedia of Narrative theory).
Weblogs are a way of organising information - independent of its topic.
'What we write about does not define us as bloggers; it's how we write about it (frequently, ad nauseam, peppered with links). Blogs simply provide the framework. The structure of the documents bloggers are creating enable them to build a social networks'(Hourihan, 2002).
'As bloggers, we're in the middle of, and enjoying, an evolution of communication. The traits of weblogs mentioned above will likely change and advance as our tools improve and our technology matures. What's important is that we've embraced a medium free of the physical limitations of pages, intrusions of editors, and delays of tedious publishing systems' (Hourihan, 2002)
http://www.oreillynet.com/pub/a/javascript/2002/06/13/megnut.html