1.) Someone with the God-given talent of saying all the right things in order to secretly manipulate a situation so that his or her own concealed goals are fulfilled.
**For example, tons of guys at the bar are schmoozers. They'll say anything a girl wants to hear so she'll be more likely to take him back to her place**
2.) Someone who just charms the pants off of people for the sake of their own amusement.
Dude: 80? You don't look a day over 21!
Old woman: Tehe, you are quite the schmoozer!