I hadn't thought of it that way. Interesting. I posted my comment because earlier on there was discussion that the dog may have a psychic connection with Walt. We were trying to determine if the times that Walt appeared were when Vincent ran into the brush. Being a retriever and all.
I am not sure if the Hanso website gives out legitimate clues, but since Mr. Friendly quoted it on the show, I went there this afternoon. If you click on Hanso's picture, a simulated computer conversation appears similar to the first one Michael had with Walt. Only on this one, when the words 'Who is this' appear, the response is: Mole.
Now I really wonder if one of the losties is a mole. (or maybe just a tasty Mexican sauce)