Is it usual to have maggots in a compost bin?

I love it when I get maggots in my compost bin because they speed the decomposition of the organic materials. Its important however to move the bin far enough away from the house that there are no objectionable odors. If you use a compost accelerant it will speed up the decomposition without attracting flies which lay their eggs and hatch as maggots. you can get compost alive for green matter from gardensalive.com which will do this.