Expedia (EXPE) jumped out of the gate and is up 13% in early trading, after it said late Thursday its board has preliminarily approved a plan to separate Expedia into two publicly traded companies. TripAdvisor, which will include the domestic and international operations associated with the TripAdvisor Media Group, which includes its flagship brand as well as 18 other travel media and advertising brands. Expedia will continue to include the domestic and international operations of the company’s travel transaction brands including Expedia.com, Hotels.com, eLong, Hotwire, Egencia, Expedia Affiliate Network, CruiseShipCenters, Venere, Classic Vacations and carrentals.com.