AOL, Inc. (NYSE:AOL) is having a hard time retaining some of their talent. Within the last couple of days, AOL saw Brad Garlinghouse and Sarah Lacy leave the company. Now former TechCrunch CEO Heather Harde is leaving the company. Harde became an executive at AOL after technology blog TechCrunch was acquired. It is believed that Harde was pissed when a Huffington Post CEO sent out an e-mail bashing TechCrunch founder Michael Arrington.