Actress Anushka Sharma has warned people to behave themselves unless they want to be blocked. The ‘Dil Dhadakne Do’ star took to Twitter to voice against the growing case of cyber bullying. “Trying to keep my Twitter positive ( well as positive as possible ) so will BLOCK people who rant nonsense with no sense of responsibility,” she said. This is not the first time that an actor has complained about facing cyber bullying. But some of the Bollywood celebs like Rishi Kapoor and filmmaker Karan Johar, have also fallen victim to it. Tongue in cheek Amitabh Bachchan replied, “@AnushkaSharma +++++++++++++++++++++++++++++ .... don't you dare BLOCK me after all these 'positives' .. haha .. love.”