In one posting,Colin Gunn, 42, said: “I will be home one day and I can’t wait to look into certain people’s eyes and see the fear of me being there.” In another message he wrote: “It’s good to have an outlet to let you know how I am, some of you will be in for a good slagging, some have let me down badly, and will be named and shamed, f****** rats.”Colin Gunn, an underworld godfather who ordered the execution of two grandparents, has now had his social networking site closed down by prison bosses.It follows last week's revelation that one of the killers of teenager Ben Kinsella used Facebook to taunt his victim's family.The Sunday Times reported that the 42-year-old said in one posting: "I will be home one day and I can't wait to look into certain people's eyes and see the fear of me being...