Samuel L. Jackson has stepped up his war against anonymous movie critics by hunting them down and confronting them online.

The Pulp Fiction star told in 2009 how he was challenging his detractors on the Internet to meet him in person for a showdown and was even handing bloggers his phone number so they could get in touch.

Now he has taken his campaign a step further by deliberately seeking out bad reviews online and 'trolling' websites to put his side of the argument.

Jackson tells U.K. talk show host Graham Norton, "I hang around online, especially when people are talking about movies. I'm not like most actors - I read my reviews. I go through the reviews and the comments and then I find the website and bust in on it and start saying stuff about the movie. Eventually they get it's me and are like, 'Oh, my God, it's him!' I go off on people."