We wish you enjoy Roku device so far. There are a lot of private channel like 5ik.TV's that offer premium content and do not like to be published and ruled by Roku.
Thanks to Catastropher Girl. She maintains the list and review them in person. For example, you can find our info here: http://catastrophegirlsrokuchanneldata.blogspot.tw/2011/11/5iktv.html
Be sure to check it out and make your Roku bring joy to life!