Sri Ramakrishna stressing on the importance of the point, wherever Nama Sankirtanam is done that place is purified
Source: The Gospel of Sri Ramakrishna
MASTER: "…….But I suggested the Panchavati because so much contemplation and meditation have been practised there and the name of God has been chanted there so often."
Please check these: Excerpts from a discourse by our Sri Sri Muralidhara Swamiji
Therefore, wherever the chanting of Nãma is performed, wherever a japa is done, a wave is created. This is the reason that we say that it is peaceful, joyful in a place. What is so peaceful? The atmospheric wave here is very calm.
To collect people living around one's home and help them chant the Lord's Name is verily service to the Guru. Or to follow the special instruction given to him/her by the Guru is verily 'service' to the Guru.