I miss monads...

gistfile1.txt

          $.ajax({ url: "foo.csv", dataType: "text" })
              .done(function(data) {
                  fetchPostTags(data);
                  $.ajax({ url: "bar.csv", dataType: "text" })
                      .done(fetchPostsComments);
                      .fail(function(failure) {
                          updateStatus("Failed to load posts-comments.csv");
                          console.log(failure);
                      });
              })
              .fail(function(failure) {
                  updateStatus("Failed to load posts-tags.csv");
                  console.log(failure);
              });