A great website with great arrangements!
Strengths
All the arrangements we have so far bought we have loved and all but one have become a part of our standard repertoire.
The information provided, the chance to hear the piece. The fact that you guys are arranging songs for choir that are different and not the same old stuff everyone else is doing.
Improvements or suggestions
Have you ever thought about ratings/comments and the opportunity for choirs to actually provide youTube videos/mp3s of them actually performing the arrangements? I do not know how that would stack up from a copyright perspective but it could add an interesting angle to your site.