You get them randomly from helping mafia members (/facebook friends) with anything really. e.g. wars, gifting etc.
Mafia Wars no longer has this.
Looted items in Mafia Wars helps you to win more fights if the looted items are better then your current items you already have.
You cannot gift some special items in Mafia Wars. You can check out my site for more guides on Mafia wars and other facebook games.
no
Jobs
you will get rare and uncommon items.
To get a falsified document in Mafia Wars you must complete the "Underboss" job "Take Over an Identity Theft Ring".
If you search mafia wars wiki, it is the most comprehensive mafia wars info site on the internet. They keep it very up to date
no you cannot delete them but if you want to get rid of the loot items, you can send them to your mafia family members.
Why yes, yes you do.
You get looted items when you fight other mafias and win.
No there isn't any teddy bears on Mafia Wars as loot or vault items.