Short Answer
- According to Metroblogging, they are "the world's largest network of city focused blogs"
- Founded in Los Angeles in November 2003
- Metroblogging covers 54 cities on five continents plus World of Warcraft
- Metroblogging uses local bloggers
- Metroblogging focuses on "less calendar listings, more friendly advice"
Slightly Longer Answer
- Metroblogging is a large network of blogs, each of which focuses on a particular city. Each city's blog is written by a group of local residents, and covers news, politics, gossip, food, and entertainment. Its main competition is the Gothamist network.