$('textarea').textcomplete([{
    match: /(^|\s)(\w{2,})$/,
    search: function (term, callback) {
        var words = ['google', 'facebook', 'github', 'microsoft', 'yahoo'];
        callback($.map(words, function (word) {
            return word.indexOf(term) === 0 ? word : null;
        }));
    },
    replace: function (word) {
        return word + ' ';
    }
}]);