in overview it is very much beneficial to the innocent landlords of the city. but in actual it is a trap of Kolkata police to accumulate bribe from the land lords who intend to let out their house. presently it is an open secret to the common people of the city that Kolkata police is the broker of promoters working at the city and they are ready to do any thing for their promoter client. I am ready to prove my contention with true incident in several numbers.