Geeze half of you are lazy & stupid, and the other half of you are complete jackasses.
I read through 9 pages of this crap before I decided to go figure it out for myself.
This "exploit" (trust me, it's not a freakin' exploit) is so simple to do.
Just make a new game in A2 Q3. If you don't have the "Kill Maghda" checkpoint for some reason, TAKE THE "LAIR OF THE WITCH CHECKPOINT" AND GO MANUALLY UNLOCK IT. IT'S NOT THAT FAR. JUST WALK YOU LAZY BASTARDS.
If you don't even have Lair of the Witch, "Road to Alcarnus" is the closest Waypoint.
The idea is to keep making new games at the "Kill Maghda" checkpoint, and walk a couple of steps south to find the "Town Cellar" instance. Inside there is a Resplendent Chest which has a decent chance to drop good stuff. If you have MF gear this is an easy way to get loot.
As an added bonus, if you hug the West wall on your way down, there is a low chance that a second (but weaker) chest spawns on the way. I found it to be there in about 1 in every 3 games.
Sometimes the Town Cellar instance is not there. I don't think this has anything to do with patching, there are plenty of examples of other instances that do not always spawn every time you make a new game. The world is randomly generated so sometimes it's there and sometimes it's not.
The run is very quick. I timed myself doing a fast run in just about 25 seconds by avoiding all mobs, checking for the west side chest, getting to the main chest, picking up loot I wanted, and leaving the game.
Here's a pro tip for you newbies: leaving a game in the field takes considerably longer than leaving a game in town. Also portalling to town and then leaving the game IS STILL FASTER than leaving the game in the middle of the field.
When you do a lot of runs really fast, you will get booted from the server. After I got booted from the server 3 times I gave up on it.
Blizzard doesn't seem to be doing anything about this, but they could potentially tag your account for making new games too fast.
I seemed to get booted by doing about ~7 runs in about ~5 minutes.
I don't want to have an experience like D2's "Realm Down". So I gave up on this.
It's not a freakin' exploit though. The only thing you have to worry about is the rate at which you create new games. You can try slowing down the run by clearing monsters.
This method might be worth it if you can kill stuff along the way, get decent exp from the monsters, and use MF gear.
P.S.: I don't recommend doing this on Hardcore mode because it spawns you right in the middle of the field. There is a low chance that ENEMIES WILL SPAWN DIRECTLY ON TOP OF YOU. THIS IS NOT SAFE!