Giani Sant Singh ji spread the message of the holy Guru Granth Sahib in different countries around the world, including the USA, UK, Canada, the Middle East, and Singapore. His followers include not only Sikhs, but many persons who are not Sikh.

He was very fluent in Punjabi, Hindi, Urdu and Persian and also had a basic knowledge of English. Maskeen ji was secular to the core.

Giani Sant Singh Maskeen was well known for exposing scams and other wrong doings in Sikh Temples. He was also known to publish books detailing how many temple's kept a majority of the donations for themselves. His efforts to expose such behavior created shockwaves throughout Sikhism, for this he won the admiration of many and the hatred of others.

During the early part of his life with resources short, Maskeen ji would walk long distances to reach remote places to spread the message of Sikhism. Always being careful to stay away from politics he dedicated his life to spreading the message of Guru Nanak.