A blogger is person who writes a blog (or weblog). Bloggers are not a homogenous group. They have a variety of personal and professional motivations for blogging and they come from a variety of political, economic and social backgrounds. One way of segmenting bloggers is by their blog type:

Personal: blog about topics of personal interest not associated with work
Professional': blog about industry and profession topics but not in an official capacity for a company Corporate: blog for a company in an official capacity Blogging is not a full-time job for most bloggers, nor is it their main source of income. A blogger can also be a doctor, a mechanic, a lawyer or a musician, and thus bloggers typically maintain a variety of professional professions for which the act of blogging is their communicative outlet with the public.