Social marketer Context Optional has acquired unwrap, inc., the maker of Facebook app platform Buzzeo . The move expands Context Optional’s leadership position in providing comprehensive social marketing solutions for brands. Terms of the purchase weren’t disclosed. In a statement, Kevin Barenblat, CEO and co-founder, of San Francisco-based Context Optional, noted that Buzzeo will remain a standalone product and will now be offered to customers free of charge even as the companies work to integrate their operations.