I have been using two hotmail account, and now i want to delete one of the account due to some privacy concern. 
My Question is :-

Does Microsoft assign my User Id to other person once i delete the account ? If yes, (then three question follows)
|1|. What is duration of recovering my account before Microsoft assigns my id to other ? 
|2|. If my Use Id is taken by the some other person(who is no my alias and he  pretends to be me) and if sends abusing mails pretending to  be me to others, then what do i do ? 

|3|. Is there is any option so that Microsoft can never assign that User Id to others once i delete my Account ?