Fulcrum Equity Partners, a growth equity fund based in Atlanta, has invested $5 million in LSN Mobile, a mobile media and advertising company. Also based in Atlanta, LSN connects local mobile media with consumers and advertisers. The company partners with affiliates of networks like ABC, NBC, CBS, Fox and Univision to offer news, weather and sports to mobile users in both English and Spanish. The growth capital investment will help LSN enhance its advertising and product capabilities and continue to expand its local media and affiliate network.