Los Angeles-based SheKnows, the unit of AtomicOnline focused on creating online sites for women, said today that it has expanded into city guides. According to SheKnows, the new site--the SheKnows City Guide--will provide information on destinations and attractions for active women and mothers. The new city guide feature will initially focus on 30 cities, including such areas as New York, Los Angeles, San Francisco, Dallas, Nashville, Chicago, Baltimore. SheKnows said the new site will serve "busy, active women and mothers" who don't necessarily have time to research exercise and entertainment options.