Show me the code! – By Davanum Srinivas

Turned out to be a piece of cake! (Note: replace xyz@us.ibm.com with your internal ibm id). Just open the command editor (chrome://ubiquity/content/editor.html), cut and paste this code below and run the bluetwit command.

const BLUETWIT_STATUS_MAXLEN = 160;

CmdUtils.CreateCommand({
  name: "bluetwit",
  takes: {status: noun_arb_text},

  preview: function(previewBlock, statusText) {
    var previewTemplate = "Updates your BlueTwit status to: <br/>" +
                          "<b>${status}</b><br /><br />" +
                          "Characters remaining: <b>${chars}</b>";
    var truncateTemplate = "<br />The last <b>${truncate}</b> " +
                           "characters will be truncated!";
    var previewData = {
      status: statusText.text,
      chars: BLUETWIT_STATUS_MAXLEN - statusText.text.length
    };

    var previewHTML = CmdUtils.renderTemplate(previewTemplate,
                                                    previewData);

    if(previewData.chars < 0) {
      var truncateData = {
        truncate: 0 - previewData.chars
      };

      previewHTML += CmdUtils.renderTemplate(truncateTemplate,
                                                   truncateData);
    }

    previewBlock.innerHTML = previewHTML;
  },

  execute: function(statusText) {
    if(statusText.text.length < 1) {
      displayMessage("BlueTwit requires a status to be entered");
      return;
    }

    var updateUrl = "https://bluetwit.hursley.ibm.com/BlueTwit2/xyz@us.ibm.com";

    jQuery.ajax({
      type: "POST",
      url: updateUrl,
      data: "comment=" + statusText.text,
      dataType: "xml",
      error: function() {
        displayMessage("BlueTwit error - status not updated");
      },
      success: function() {
        displayMessage("BlueTwit status updated");
      }
    });
  }
});