Locke visits Walt in New York, Ben watches from a distance

Next John Locke goes to New York City to see Walt Lloyd. Before Locke talk to Walt, he has a conversation with Matthew Abbadon where he asks him to track down his old girlfriend Helen Norwood. The bell rings at the Fieldcroft School that they are watching and Walt is among the students leaving for the day. As Locke and Abbadon sit across the street watching Walt, Abbadon says "So that's Michael Dawson's son. Boy's gotten big."

Walt looks across the street and sees Locke sitting there. Walk walks over to Locke and Locke notes that he doesn't seem surprised to see him. Walt then tells him that he's been having dreams about Locke. He says "You were on the island wearing a suit and there were people all around you. They wanted to hurt you John." Locke shrugs it off saying that they're just dreams, but Walt seems to understand his own "ability" and knows it means more. Walt asks about his dad and Locke says last I heard your dad was on a freighter near the island, even though he most likely knows that Michael is dead. When Walt asks Locke why he came to see him, Locke just says "I just wanted to make sure you were okay." Walt then leaves without Locke asking him to go back to the island. Abbadon asks him about it and Locke says "Boy's been through enough." Abbadon heckles him saying he's "0 for 2." Locke says that he only needs to convince one person to come back and if he does, they all will.

We then see the point of view of someone watching Locke and Abbadon. It is revealed to be a very dapper looking Ben Linus.

Has Matthew Abbadon seen or met Walt before seeing as he mentions how big Walt has gotten? It's good to see Locke legitimately happy and smiling which he does when he sees and talks to Walt. It shows the stark difference between him and Ben that he chooses not to ask Walt to come back to the island.

Also, what is up with Walt's dreams? Are these premonitions of things to come? Will Caeasar, Ilana and the other Ajira 316 survivors deem Locke a threat or an enemy?

Something else that stands out is that when Walt visits Hurley at Santa Rosa in "There's No Place Like Home," he refers to him as Jeremy Bentham even though Locke never tells Walt during the New York conversation that he is using that name. How did Walt know that he was using that name? Could it relate to the dreams he's been having?