Cussing is a common literary method used in video game reviewing and let's plays. It can be used effectively (see Ebeeto, Urinatingtree, PlayItBogart, Nostalgiacritic), but in most cases, people use it exessively, and let the cursing substitute for actual jokes and humour.
Memorable cussing in video game reviews and Let's Plays Edit
What a shitload of fuck (The AVGN, in several of his videos)
Horribifuckus (A word invented by the NostalgiaCritic to critisize a particularly bad movie, because any other form of verbal insult couldn't do the movie justice)
POP 'EM IN THE FUCKING HEAD! (Ebeeto in his Hitman Walkthroughs)