okay guys, this is taken directly from Bungie.net
<quote= Bungie>So, you may be wondering why we haven't fixed the quitter problem yet. Thing is, we probably have, but we just haven't turned it on yet.
As we speak, the Banhammer is watching, amassing data about who's been quitting, the manner in which they have quit, and who suffered as a result of that quit. Numbers are feeding into complex heuristics and deep databases, and somewhere in the middle of it, our very own disembodied soul howls for revenge.
"Swing Banhammer, swing!" you cry out. Well, problem is, this is a Beta and we don't want the Banhammer swinging wildly until we know for sure that the numbers coming in are correct, and that the Beta itself is stable and not disconnecting people (creating the illusion of quitting.) Currently, we are only logging data for future action.
So what do we have in store for when it goes live next week? Let me pull back the curtain just a bit:
For starters, our Banhammer is getting more data than even Halo 3 produced, which is going to let us dial it in and more aggressively deal with habitual quitters. The real jerks are going to run into this, and then you're not going to see them online anymore. It'll be great.
Second, quitting a game will forfeit any credits you may have earned for that game. In fact, it may even cost you some credits. We're waiting to see how effective the Banhammer is before deciding exactly how much.
Lastly, and all new for Reach, we have a new type of ban called a Quitter Ban. This is a relatively soft ban, so we will be using it quite aggressively, activating after only a handful of quits and lasting a rather long time. What does it do? A player with a Quitter Ban will be temporarily unable to re-enter Matchmaking for 15-30 minutes following any further quits.
Oh, and we're playing around with some gametypes which end early (think "Sudden Death") when most of a team quits out, so that you don't need to play 8v1 Slayer to 100 (aka. "Hide and Seek".) You may see some of these in Matchmaking if we're unhappy with the other countermeasures.
As custodians of the online experience, we will be monitoring and adjusting out countermeasures as necessary to keep things ticking along nicely, without games being marred by habitual flakes who quit when they don't get the Sniper Rifle first. So in the meantime, enjoy the Beta!
And quit quitting, because we are watching, and it is going into your personal Banhammer dossier.
(Special pre-emptive note: Online game designers are familiar with "virtual guilt", whereby a perfectly upstanding, innocent player will feel irrationally nervous and guilty upon hearing about a potential punishment. And now, you're familiar with the concept too. Well, relax. We are very deliberate about our enforcement policies, and if you're not a habitual quitter, we're not going to ban you for that one time that your internet cut out. And if it cuts out every game, well, you should probably use the downtime between games to call your ISP and get a technician out. It'll be for the greater good.)
So yea, it doesn't sound as bad as the OP made it out. Your not going to be perma-banned for quitting if your connection dies a few times, or if something comes up, or any other legit reasons. Looks like you just get "quiter banned" for 15-30 minutes if this happens, which sounds fine to me. All in all? I think it's a step in the right direction.
EDIT- Just re-read the OP. Christ Logan, no wonder everyone is saying "fuck this game" and what not. Poorly worded OP was poorly worded.