My dear friends, I want to say something...I donīt know the rules either, in my oppinion itīs nice this way.
For me, I think that we can know such good things on wednesday, I mean "new musics" who almost never have been heared. And thereīs a lot of good works hidden in the moon library!
For example: Birdsongs of the Mesozoic... I actually donīt remember when I listened coming from someones request - that were all from the randomly radio setlist.
About limit the requests, I donīt have some specific oppinion, but I donīt like the same artist or the same song being played like before, like that "Flower Kings" song.
No ofenses, of course.