Guru nanaks concept of langer is great,however sikhs are not able to utilise the gains it offers to sikhism.we should distribute free literature about sikhism/gurunanak in various languages so that people of other religions who eat the langer also get benefitted from the teachings of sikh religion and thus help in spreading the message of sikhism.we should offer langers at only historically impotant gurudwars and not everywhere.if we save money we should utilise it for making educational and professional schools.