Annadhanam is not only for rich people it can be done by all the people irrespective of their financial condition. It means not only to human beings but to any creature in the world. for example if you have only five rupees and still you can feed more numbers. You may ask how? get rice or sugar for that amount you can put it in a ant hill so that thousands of ants can eat their full meal.That is why in tamil proverb "MANAM IRRUNDHAL MARGAM UNNDU"