Declaration: I didn't invent this. Just found in Google and sharing this. I don't claim any way associated with you whatever you do.
If posting in a wrong section mods please move to the right one.

This glitch will enable you to get 7500 MSP First month, then 25,000 MSP Next month & 42,500 MSP the next and so on.

1) Make sure you have a rewards account for your main Xbox account on Xbox LIVE

2) Sign into your main account on [ Register or Signin to view external links. ] and on your xbox

3) Change your Local to JAPAN

4) Sign out of your account on XBOX and click 'Create an account'

5) Create an account as normal then join Xbox LIVE

6) When joining Xbox LIVE set your email as your own, but with gmail.com, or Hotmail.co.uk. Just put @JP.com at the end. So for me, i would put NoughtPointFour @ JP.com.

7) Now set your security questions to the top one (Pick an answer)

8) Date of birth to 18+

9) Everything else is your options

10) Now click learn more about Xbox LIVE

11) Continue to the page which offers prices, then click NO THANKS.

12) Now go to the Game Market place and search 'Mortal Hunter Frontier 5 "MHF'' (This could be on Game spotlight)

13) Load up the game and click the link for the 2 codes, then write down the code with 48H above it. Then Redeem it in the 'Redeem Code' part on the home button

14) Once the code has expired log onto your Xbox Rewards account on [ Register or Signin to view external links. ] on your main account

15) Then click 'Refer a friend'

16) Refer 5 accounts (do the @JP Glitch 5 times per day) you've created

17) NOTE COULD TAKE UP TO A DAY FOR XBOX TO READ THE ACCOUNTS

18) Now click refer

19) Now once refered, create a rewards account for all accounts you referred. Then Redeem the 48 Hour code again {MUST BE A DIFFERENT CODE, JUST RELOAD THE GAME}

20) Once created sign into your email you used for the @JP.com account set up. But instead of signing in with NoughtPointFour @ JP.com, you just put, NoughtPointFour @ Gmail.com

21) Once on the email account and rewards set up, you can now claim the email sent to the account, and claim 400 MSP on the @JP.com and 100MSP on the main account. If you refer 5 per day, and keep referring 5 every day, you'll be earning 100k MSP in no time!