Adelaide is known for its abundance of signage with the word 'Polites' on it. This is due to the fact that the word 'Polites' is an ancient Greek word, which translates to 'the polite ones'. It is used to signify hospitality and friendliness, making it a popular choice for businesses in the city. The signage serves to remind locals and visitors alike that Adelaide is a welcoming place with a friendly atmosphere. Furthermore, it serves to remind people of the city's long-standing Greek heritage. The prevalence of 'Polites' signs across Adelaide is a testament to the city's warm and inviting nature.