A blogger is someone who writes regularly for an online journal or website. A political blogger might provide weekly commentary on current events.
A personal blogger keeps a website which may include diary-like entries, photographs, and links to other sites. Such a blog is a record of how the blogger spends her days — vacations, weekend outings, books and movies she's watched, and so on. Fashion bloggers might take photos of outfits or link to shopping sites, and pop culture bloggers might recap last night's TV shows. Blogger comes from blog, first used in 1998 as shorthand for weblog.