Read the article at the beginning of this thread - it describes exactly what Fr Sergei does. He goes to the places where those who are in need of Christ gather, he speaks to them in their language telling them of the love of God and then he prays for them. He also provides a refuge where those who are lost can come and find some solace in a safe place where they will also find a priest to guide them. Most importantly, he prays, he serves in the Church which is his environment and thus serves as a bridge between the lost and the found, bringing a little of the light into the darkness and providing a way for those who live in the "clubs" to come and exchange their life of self for the life of Christ and begin to live in the Church. All this he does without compromising the faith or changing it in any way. He is a missionary. Fr David Moser