Previously PSFocus noticed in the credits of Resistance 2, Guerrilla Games was mentioned. Insomniac has misspelled the company's name.
Hermen Hulst, director of Guerrilla Games, was a guest in a Dutch talk show, Pauw & Witteman. In the talk show the name of the company, Guerrilla, was also misspelled.
Obviously people have a hard time writing the name Guerrilla correctly.