New Post: AddDiscussionBoardItem but it is not working for me.

I am trying to use AddDiscussionBoardItem but it is not working for me. I could use an example. Here is one of the ways I have tried:
$().SPServices({
listName: "myListName",
operation: "AddDiscussionBoardItem",
async: false,
message: "New",
completefunc: function (xData, Status) {}
});