1. Politeness involves managing face and face threats through indirect and direct speech acts. It aims to minimize imposition and maximize benefit to others.
2. Leech proposed politeness maxims to explain indirect speech, including tact, generosity, agreement and sympathy. However, these lack empirical testing.
3. Brown and Levinson viewed politeness as strategies to save face, such as bald-on record, positive politeness and negative politeness, based on power, distance and imposition of acts. However, their model overlooks mixed motivations and cross-cultural differences.