TECH CRUNCH - Tumblr Labs, the experimental division of Automattic's Tumblr, has launched a new feature called "Communities." This experimental feature aims to create a dedicated space within Tumblr for users to network around specific topics, similar to Reddit's subreddits or Twitter's Communities. Communities will be semi-private spaces with moderators, rules, and privacy settings. Users can create communities for various purposes, such as fan groups for TV shows, movies, artists, or video games and groups for people with shared interests like attending the same school or participating in board game activities.