Annoying warnings like this one won’t help making the web safe for idiots:

Install my userscript to disable it:

// ==UserScript==
// @name            SWTOR Forum: Disable Link Popup
// @description     Disables the annoying warning when clicking on external links. [Martin Karer, http://www.sezz.at]
// @namespace       sezz.at_swtor.com_disable_link_popup
// @include         http://*swtor.com*/community/*
// ==/UserScript==

var $ = unsafeWindow.jQuery;
$(document).ready(function() {
	$("a").die("click");
});

Download: SW:ToR Forum No Link Popup Userscript (413 bytes)