Actress Anushka Sharma says she will 'block' people who write nonsense on the micro-blogging site Twitter.

Some of the celebrities, including veteran actor Rishi Kapoor and filmmaker Karan Johar, have fallen victim to cyber bullying. Anushka, who mostly uses the digital platform to share her opinion on various subjects, has now warned people to behave or else get blocked.

"Trying to keep my Twitter positive (well as positive as possible) so will BLOCK people who rant nonsense with no sense of responsibility," Anushka tweeted on Sunday.

Responding to the "Dil Dhadakne Do" star's tweet, megastar Amitabh Bachchan said: "@AnushkaSharma +++++++++++++++++++++++++++++ .... don't you dare BLOCK me after all these 'positives'...haha... love."

To which Anushka replied that she will not do that in a life time. "@SrBachchan hahahahaaha noooo way!! Not in a lifetime Sir!"