We did some trial work on compost and have been pretty happy with the results. We have found some of the batches vary in freshness so where and when you use it could be a concern. Overall though, using it in our divot mix has been great for speeding up germination and divot recovery. It is also showing significant promise in our high wear and droughty areas. See the link for the testimonial we did for Cedar Grove Compost.
http://www.youtube.com/watch?v=NL0B0g6EgUE&feature=player_embedded