Is this allowed?

You are allowed to use it. The way the licensing works is that it's tied to the gamertag that purchases it as well as the console that it was purchased on. As long as your brother doesn't transfer the licenses to another console, you can access his content
on your profile.

Yes, it is allowed. You cannot implement this strategy for previous purchases, but you can do it going forward. Additionally, you will need to be connected to XBox Live in order to you to use any content downloaded this way as the console license determines
what can or cannot be played while offline.

i don't know if you guys are understanding me correctly. When you purchse say a xbox live arcade game the license is given to the xbox and the account which purchased the item? correct? So that means if i have my account on my brothers xbox and mine i can
buy a arcade game with my account on his xbox and this will give his xbox the license and i can go back to my xbox with my gamertag and redownload the game and play it on my account because i have the license i wan't to know if microsoft allows this because
i don't want to break the rules i hope you guys understand

not all DLC have the same licensing attributes.

you only need one game per household purchased of any kind physical disc or digital download.

I don't do it personally cause I want the gaming industry to grow into the biggest thing on the planet. I bought gears of war 3 eleven times for beeping beeping *cries a litttle* do not ask why..... But it is possible and if I can post the steps how to do
it here on the thread if bowski477 allows it. OR PM? o.0>?

It does not involve anything terribly complex because it is time consuming and by no stretch of the imagination considered illegal. all you will be doing is pushing buttons and signing in and out of profiles in sequence at specific times.

If I were you I would not attempt and try to configure your xbox 360 console to allow you to do what you are suggesting to do. The right thing to do is to buy one or two games or how ever many you can afford and enjoy them with your brother like I have with
mine because I have been in the same situation as you.

example: Call of Duty:MW3 for you and your brother. buy the DLC you and your brother which to access in the game.

Enjoy the Game because if you both have a main game you both love to play it would be better enjoyed as a whole experience. Anyway even if you had all the games to play on all consoles the easy way its much less inviting because its much harder to enjoy
anything knowing you are not limited by choice. limitation in life and in your own xbox systems seem like a huge drag but sometimes its a beautiful thing. You and your brother will enjoy this one game because it happened for me and its still a memory I have
over 4 years old now. --> besides, there is splitscreen???

Yep, I tried to give an allowance today and couldn't. Google brought me here. Looks like I have to make a trip to the store for points/money. Good call.