The majority of those interviewed said they did not watch the reality programme anymore, although many confessed that they had watched it in previous years.
One woman said: "The first [series] was good because it had normal people in it but then it just got more and more stupid."
Another person said: "We used to love it but we just don't watch it anymore."
However, some of the people interviewed said that they did still like reality programmes, but favoured shows such as C4's 'Shipwrecked', ITV1's 'I'm A Celebrity... Get Me Out Of Here!', C4's 'Come Dine With Me' and Sky 1's 'Road Wars'.
One person told BR: "I still think Big Brother would be a good show if they would just go for a mix of normal, quite ordinary, interesting people. [But it's] almost like they think the wackier, the zanier, the more 'out there' the better."
This is the 10th series of the reality show, now on air for 48 days, and the lowest-rating for Channel 4. Last Friday night for an eviction special which dumped housemate Carly and introduced five new contestants.
Mike Parker, head of strategic sales at C4, said last week that although this year's show had attracted fewer viewers, across the C4 network.