DJ Cleo, Siv Ngesi (Instagram)
Perhaps no critic was harsher than comedian, Siv Ngesi who called for Cleo to be tested for drugs on stage and said Cleo looked like "a walking dead."
In fact, it wasn't too long before Cleo trended on the social media site, with hundreds of people voicing their opinion.
Meanwhile, singer Danny K also found himself in the middle of a social media storm for his Idols SA performance
"I have never allowed praise to get into my heart and criticism to get into my head," Danny said.