I think that most everyone would agree that sinning can be fun. Or, if you want to take it a step less severe, sinning in gaming is fun. I've blown up innocent bystanders in GTA and "accidentally" done a team kill in...well basically every game that has team kills. However, sometimes, sinning in video games can make the game darn near unplayable. Thus is the case with Gears of War 2's announced Horde Mode.
The crew at OXM UK have outlined what they call the "Seven Deadly Sins of Horde Mode," in regards to the "dos" and "dont's" of the game mode. Some of the sins include "Thou Shalt Not Ignore Team To Go For A Little Wander" and "Thou Shalt Not Go All OCD And Take Every Ammo Box." While the titles of the sins are quite comical, the advice extolled in them is actually quite valuable. So hit the link and remember: sinning is bad, no matter what I said earlier.
Source: Oxm.co.uk