lo-fi is a term denoting that which is intrinsically of a primitive, non-technological or sub-par nature. It is a broad term which is often used synonymously with techno peasant (i.e. "you burger flipping lo-fi") and in general has negative connotations (i.e. "stay away from there mang, they got nothing but lo-fi crap"). In a broader sense, that which is "lo-fi" is poorly thought out, shoddily implemented and lacks severley in execution. Not soley related to technology but more along the lines of being cheap or of low quality.