People either in Stressful situations with Millions or Typical shared money Scams Looking for a Partner.

I haven't been able to figure out yet what the purpose of these Scams yet and how the Offering side can gain profits yet, But I am sure that there has to be something behind this and the only
way I feel to find out is to go along with one of them and keep on your toes with it. I am holding right now at this time at least 5 different emails from 5 different people all with different stories to tell, and the Only thing that they have in common is that they are all requesting the same exact thing from me, this is a Photo ID either a Drivers Lic or a Passport and the information
to a Bank account that they will be able to wire funds into. What is the Benefit going to be here that they have to gain from this, usually these are easy to figure out but this one has me stumped. What can they do with your photo Id as this is only a copy on a piece of paper that
usually comes out all highlighted in Black all over it to where at least 25% of it is unreadable.
And as far as the Bank account of course your going to give them a separate account that you
will keep a $20 balance in to keep it from being closed, and never put any funds into this account as you keep this only for them to use for their claim of depositing this cash for you.

I don't see anyway for them to gain any profit from this at all unless you give them the account
number of your everyday account that you use for your bills and writing out checks against, but
this would not be a very intelligent thing to do on your part. A couple of them even make the
statement saying to please sent us a good account in good standing even if you keep next to a 0 balance in it most of the time as long as it is in regular active use.

Can anyone answer this (What is the Benefit to this on their end)