I am not an expert: I see accounts that are posting the scam... And then they get recovered. It is no longer the scammer but the original user. That leads me to believe that they where dumb enough to enter their password.

The benefit of resteem is that if you resteemit it early on and it makes a ton of money.... you get some of it. It is called curation rewards. There are a lot of steem folks who just curate.
Yes if you are correct. If some one comes to your page and you have resteemed posts then it is not true posts from you.
There is a tool and I cant remember what its called(if i wasn't tired i'd look it up)...but it blocks out resteemed posts so you only see true posts from a user. But that is where we are now with steeemit.