You can argue the relative merits of the energy sword VS the Needler all you want, but the most powerful weapon in Halo 3 is, hands down, The Banhammer.
And Bungie's about to bring that sucker down hard.
This message was posted Friday on Bungie's official site, Re: Cheating (we guess):
Harbringer of Doom:
There are those of you doing things you shouldn’t be in Halo 3. Some of you have gotten a little too famous for your own good. This ain’t a church and there is no redemption or salvation once you have been judged. Apologies are now officially too late to save you.
The storm approaches.
Smash! We'll see how it goes.
Have you run into any cheaters in Halo 3?