Non Virtual Item Lotteries

I've seen a few "xbox lottery" threads popping up in the Non Virtual Item Sales section.
Was just curious as to the staffs opinion on these sales as I didn't find anything prohibiting
them within the Non Virtual Item Sales Section stickies.

I think it's a general assumption that these lotteries are highly exploitable.

http://www.sythe.org/showthread.php?t=883656
http://www.sythe.org/showthread.php?t=882100

Don't know if this is the right section, not really suggesting anything and this isn't quite feedback. Feel free to move/lock this as necessary.