BuyWithMe, a group buying Web site helmed by former Chicagoan and TicketsNow Chief Executive Cheryl Rosner, is launching in Chicago Wednesday.

The New York-based company had conducted a “soft launch” locally, but is making Wednesday its official debut in Chicago and Los Angeles, bringing its number of cities to 11. BuyWithMe is competing in the same social commerce space crowded with daily deal startups, including Chicago-based Groupon and Washington D.C.-based LivingSocial. Get the full story »