My View: M-bullshit: Role and Relevance of Segmentation and Positioning
Geographic Segmentation: It's basis on geographical area like, Nation, State, City Etc. For example, KFC add pure vegetarian dish in his menu for Indians.
Demographic Segmentation: Basis on age, gender, income, family size, education, occupation etc. For example, BlackBarry mobile phone, targeting Business personal, Sport Bike targeting youngsters.
Psychographic Segmentation: Basis on personality, status, lifestyle, social class etc. For example, Rolex watch, targeting high profile customer, luxurious lifestyle.
Behavioral Segmentation: Basis on customer buying behavior, like customer usage rate, type, occasions, loyalty, Benefit sought. For example Sensodyne tooth pest targeting those customer who have sensitive teeth.