Rosetta Stone Inc. is a provider of technology-based language learning solutions. The Company develops, markets and sells language learning solutions consisting of software, online services and audio practice tools primarily under its Rosetta Stone brand. Its teaching method, called as Dynamic Immersion, is designed to use the innate, natural language learning ability that children use to learn their native language. The Company's courses are based on its interactive technologies and pedagogical content, and utilize a sequencing of images, text and sounds to teach a new language without translation or grammar explanation. As of December 31, 2009, the Company offered its self-study language learning solutions in 31 languages. Its customers include individuals, educational institutions, armed forces, government agencies and corporations. On November 1, 2009, the Company acquired certain assets from SGLC International Co. Ltd., headquartered in Seoul, South Korea.