I was thinking more about this. There are really two aspects to this question:
1. Do people like to be greeted when they enter the room?
2. Does greeting people generate more revenue?
I think all of us would say that we don't like being greeted by assertive sales people in stores, but it could be that strategy generates more sales. Maybe the same is true on MFC? Personally, I don't think so.
One strategy that I think can work with new people is if the model checks out their profile and then brings the discussion around to some of their interests. For example, if their profile talks about dogs, motorcycles, a band, etc. then bring that up in conversation indirectly. That is, rather than saying "so newguy01, I see you like motorcycles", instead say "I think guys who ride motorcycles are so hot". This will allow him to have an easy way to enter the conversation.