Why does my jQuery click handler appear to run multiple times for some of its targets?

Question

I apply:

$(\".newContentLink\").click(function() {
    $(\"#test\").append(\"1\");
});

On this:

Answer 1

or you can unbind the click event each time you add a new element

$('.newContentLink').unbind('click');

$(".newContentLink").click(function() {
    $("#test").append("1");
});