When you run your games in any edition of D&D how much controll of the game do you allow your players to have?
Do they have free reign on any supplement they wish or do you restrict them?
I'm somewhat restrictive here. I only allow books in that I own. Even then, not everything from said books may be allowed (though that's rare, to be honest).
Do they chose who gets what treasure items or do you place items spacifically for certain players or do you follow the guidelines of the book or adventure you're using?
It's a mix, I suppose. Generally, treasure will be tailored to the situation and circumstance, based on location, villains, etc. If I'm using an adventure, I'll rarely change what's in there (though sometimes I will). I'll also keep in mind what the players want for their characters, and maybe fit some of those in if it fits.
The players fight among themselves as to who gets what. (For my players, it seems that "shares" are completely unheard of - they simply give items out to each other based solely on 'need'.)