I doesn't work for me. It throw an error:
page = requests.get(url, cookies={'uid': config['uid'], 'password': config['password']})

output:
2014-03-05 20:26 ERROR    task          iptorrent_develop BUG: Unhandled error in plugin discover: expected string or buffer
Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/flexget/task.py", line 409, in __run_plugin
    return method(*args, **kwargs)
  File "/usr/lib/python2.7/site-packages/flexget/event.py", line 21, in __call__
    return self.func(*args, **kwargs)
  File "/usr/lib/python2.7/site-packages/flexget/plugins/input/discover.py", line 254, in on_task_input
    return self.execute_searches(config, entries)
  File "/usr/lib/python2.7/site-packages/flexget/plugins/input/discover.py", line 137, in execute_searches
    search_results = search.search(entry, plugin_config)
  File "/usr/lib/python2.7/site-packages/flexget/plugin.py", line 127, in wrapped_func
    return func(*args, **kwargs)
  File "/usr/lib/python2.7/site-packages/flexget/plugins/urlrewrite_iptorrents.py", line 179, in search
    page = requests.get(url, cookies={'uid': config['uid'], 'password': config['password']})
  File "/usr/lib/python2.7/site-packages/flexget/utils/requests.py", line 163, in get
    return request('get', url, **kwargs)
  File "/usr/lib/python2.7/site-packages/flexget/utils/requests.py", line 153, in request
    return s.request(method=method, url=url, **kwargs)
  File "/usr/lib/python2.7/site-packages/flexget/utils/requests.py", line 138, in request
    result = requests.Session.request(self, method, url, *args, **kwargs)
  File "/usr/lib/python2.7/site-packages/requests/sessions.py", line 349, in request
    prep = self.prepare_request(req)
  File "/usr/lib/python2.7/site-packages/requests/sessions.py", line 287, in prepare_request
    hooks=merge_hooks(request.hooks, self.hooks),
  File "/usr/lib/python2.7/site-packages/requests/models.py", line 289, in prepare
    self.prepare_cookies(cookies)
  File "/usr/lib/python2.7/site-packages/requests/models.py", line 486, in prepare_cookies
    cookie_header = get_cookie_header(self._cookies, self)
  File "/usr/lib/python2.7/site-packages/requests/cookies.py", line 134, in get_cookie_header
    jar.add_cookie_header(r)
  File "/usr/lib64/python2.7/cookielib.py", line 1326, in add_cookie_header
    attrs = self._cookie_attrs(cookies)
  File "/usr/lib64/python2.7/cookielib.py", line 1285, in _cookie_attrs
    self.non_word_re.search(cookie.value) and version > 0):
TypeError: expected string or buffer