Like superstar Rajinikanth, Karunanidhi is also known for his punchlines and repartees. But flak from the common man is clearly something the 89-year-old DMK supremo didn't bargain for when he signed up on Twitter after his Tamil Ealam conference last week. Despite the barbs and innuendoes, Karunanidhi and his family have told NDTV that he will stay on and either answer or ignore his critics.