There are likely several people in your area feeding feral cats. The best way to provide and care for the feral cats in your community is:
TNR – Trap the cats, have them spayed or neutered, and return them to the same location they were picked up from.
Feed the cats in feeding stations and only for one hour per day. Be sure that once “dinner time” is over, all food is promptly picked up and cleaned up. You do not want to leave food out all day/all night, or leave it scattered about because that will bring in wildlife who can spread diseases and cause nuisance issues.
See Alley Cat Allies’ resources on Community Care.