@purplespark: Yes, in most cases, foster parents receive pay. They usually receive an allotment each month which is supposed to be used to provide necessities for the foster child in their care. They can receive additional compensation for other things such as money for a prom dress, school pictures or things such as that. The amount of pay that the foster parents receive differs based on the age and sex of the child.
There are also foster parents that choose not to receive pay. Most foster children receive Medicaid so to reduce the cost of medical care for the foster parents.