Pretty much what everyone else has mentioned so far, but maybe some live streaming online? The Australian version had an hour stream online after each episode called 'The Fallout Zone' which could be interesting:
Quote:
In addition to the television broadcast a live feed from the camp site airs for an hour after the AEDT airing of the show on Ten's website and mobile app, titled The Fallout Zone but more commonly referred to as FOZ. The content of feed is available on the website after the fact so viewers in other states may watch the show after their airing of the main show. The feed is hosted by comedian Sam Mac and producer Ciaran "The Butcher" Flannery, also known as "The C-Word". On 8 March and March 12, 2015, producer Dominic "The Domin8or" Sullivan filled in during Flannery's absence. The duo interact with viewers through Twitter, using the hashtag #FOZ.
https://en.wikipedia.org/wiki/I%27m_...lian_TV_series)
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They also had free Twitter voting which more shows need over here imo.